Add integration google-analytics

This commit copies the content of the integration repo into
the "integrations" folder.

Original repo: https://github.com/segment-integrations/analytics.js-integration-google-analytics
Readme: https://github.com/segment-integrations/analytics.js-integration-google-analytics/blob/master/README.md

Author: SegmentDestinationsBot

integrations/google-analytics/HISTORY.md

@@ -0,0 +1,237 @@
+2.16.0 / 2019-03-05
+===================
+
+  * Add support for product level custom dimensions to Product List Viewed and Product List Filtered handlers
+
+2.15.0 / 2018-08-07
+===================
+
+  * Fix casing from abmiguous docs
+  * Bump version
+  * Add lodash to package.json
+  * Correct casing on parameter name
+  * Change amp id setting name
+
+2.15.0 / 2018-08-06
+==================
+
+  * Change amp id setting name
+
+2.14.0 / 2018-03-28
+=================
+
+* Support position property as part of product data.
+
+2.13.0 / 2018-02-26
+=================
+
+* Support product-level custom dimensions for enhanced ecommerce events.
+
+2.12.0 / 2018-02-06
+=================
+
+* Support custom dimensions for enhanced ecommerce events.
+
+2.9.6 / 2017-11-28
+=================
+
+* Add support for useGoogleAmpClientId option.
+
+2.9.5 / 2017-10-26
+=================
+
+* Release to support reversion of failed deploy.
+
+2.9.4 / 2017-08-31
+=================
+
+* Fix tracker naming from 2.9
+
+2.9.3 / 2017-08-28
+==================
+
+  * Fix breaking changes in 2.9.1
+
+2.9.2 / 2017-08-25
+==================
+
+  * Revert 2.9.0 and 2.9.1
+
+2.9.1 / 2017-08-25
+==================
+
+  * Gate naming the GA tracker with an option
+
+2.9.0 / 2017-24-08
+==================
+
+  * Use custom name for tracker rather than default unnamed
+
+2.8.0 / 2017-06-13
+==================
+
+  * Extend previous change to apply for custom properties of `page` events.
+
+2.7.0 / 2017-05-31
+==================
+
+  * Add an interface option to stop the integration from setting custom metrics/dimensions to the global GA tracker object
+
+2.6.0 / 2017-05-10
+==================
+
+  * Sets id, when present, as a custom dimension on ga tracker object out of the box
+
+2.5.1 / 2017-05-05
+==================
+
+  * Remove excess pageview from addImpression-bound events
+
+2.5.0 / 2017-04-27
+==================
+
+  * Allow user to override global nonInteraction setting
+
+2.4.1 / 2017-03-09
+==================
+
+  * Renamed 'sorters' to 'sorts' to match spec
+  * Protected against non-array inputs
+
+2.4.0 / 2017-03-07
+==================
+
+  * Add Support for addImpression action
+
+2.3.0 / 2016-12-08
+==================
+
+  * Add Support for Optimize
+
+2.2.0 / 2016-09-06
+==================
+
+  * support spec v2
+
+2.1.2 / 2016-08-31
+==================
+
+  * update order started to checkout started
+
+2.1.1 / 2016-08-16
+==================
+
+ * Fix for release
+
+2.1.0 / 2016-08-16
+==================
+
+  * update ecommerce spec syntax to v2
+
+2.0.0 / 2016-06-21
+==================
+
+  * Remove Duo compatibility
+  * Add CI setup (coverage, linting, cross-browser compatibility, etc.)
+  * Update eslint configuration
+
+1.4.3 / 2016-05-07
+==================
+
+  * Bump Analytics.js core, tester, integration to use Facade 2.x
+
+1.4.2 / 2016-04-28
+==================
+
+  * Changed props.category to track.category() so that it takes into account alternative casings.
+
+1.4.1 / 2016-04-25
+==================
+
+  * add support for defensive referrer override
+
+1.4.0 / 2016-02-13
+==================
+
+  * Merge pull request #21 from segment-integrations/add-sample-rate
+  * Added non default sampleRate.
+  * Added sampleRate.
+  * Release 1.3.2
+  * Merge pull request #19 from segment-integrations/add-list-prop-EE
+  * add optional list prop to EE events
+  * Release 1.3.1
+  * Merge pull request #18 from segment-integrations/fix/metrics
+  * refactor metrics/dimension/cg decoration factor to accomodate mapping the same property to multiple fields
+  * Release 1.3.0
+  * Merge pull request #16 from lukebussey/master
+  * Adds support for setting content groupings via tracking code. Google Analytics supports 1-5 content groupings which are set in the same manner as metrics and dimensions. E.g. `ga('set', 'contentGroup<Index Number>', '<Group Name>');` This commit adds support for setting content groupings in the same way that metrics and dimensions are set.
+  * Release 1.2.0
+  * Merge pull request #14 from segment-integrations/fix/single-page
+  * omit location from subsequent page() calls
+  * Release 1.1.2
+  * Merge pull request #11 from segment-integrations/stringify-booleans
+  * stringify booleans for cm
+  * Release 1.1.0
+  * Merge pull request #10 from segment-integrations/add-coupon-product-level
+  * support enhanced eccommerce product coupon level
+
+1.3.2 / 2016-02-03
+==================
+
+  * add optional list prop to EE events
+
+1.3.1 / 2016-01-28
+==================
+
+  * refactor metrics/dimension/cg decoration factor to accomodate mapping the same property to multiple fields
+
+1.3.0 / 2016-01-26
+==================
+
+  * Adds support for setting content groupings via tracking code. Google Analytics supports 1-5 content groupings which are set in the same manner as metrics and dimensions. E.g. `ga('set', 'contentGroup<Index Number>', '<Group Name>');` This commit adds support for setting content groupings in the same way that metrics and dimensions are set.
+
+1.2.0 / 2016-01-12
+==================
+
+  * omit location from subsequent page() calls
+
+1.1.2 / 2015-09-11
+==================
+
+  * stringify boolean custom metrics or dimensions
+
+1.1.0 / 2015-08-19
+==================
+
+  * support enhanced eccommerce to product coupon level
+
+1.0.5 / 2015-08-06
+==================
+
+  * Merge pull request #9 from segment-integrations/label-fix
+  * add label field to GA enhanced ecommerce calls.
+
+1.0.4 / 2015-06-30
+==================
+
+  * Replace analytics.js dependency with analytics.js-core
+
+1.0.3 / 2015-06-30
+==================
+
+  * Replace analytics.js dependency with analytics.js-core
+
+1.0.2 / 2015-06-24
+==================
+
+  * Bump analytics.js-integration version
+
+1.0.1 / 2015-06-24
+==================
+
+  * Bump analytics.js-integration version
+
+1.0.0 / 2015-06-09
+==================
+
+  * Initial commit :sparkles:

integrations/google-analytics/README.md

@@ -0,0 +1,12 @@
+# analytics.js-integration-google-analytics [![Build Status][ci-badge]][ci-link]
+
+Google Analytics integration for [Analytics.js][].
+
+## License
+
+Released under the [MIT license](LICENSE).
+
+
+[Analytics.js]: https://segment.com/docs/libraries/analytics.js/
+[ci-link]: https://circleci.com/gh/segment-integrations/analytics.js-integration-google-analytics
+[ci-badge]: https://circleci.com/gh/segment-integrations/analytics.js-integration-google-analytics.svg?style=svg