Added README template for Image_Canvas.

Author: CloCkWeRX

README

@@ -0,0 +1,19 @@
+This package is http://pear.php.net/package/Image_Canvas and has been migrated from https://svn.php.net/repository/pear/packages/Image_Canvas
+
+Please report all new issues via the PEAR bug tracker.
+
+If this package is marked as unmaintained and you have fixes, please submit your pull requests and start discussion on the pear-qa mailing list.
+
+To test, run either
+$ phpunit tests/
+  or
+$ pear run-tests -r
+
+To build, simply
+$ pear package
+
+To install from scratch
+$ pear install package.xml
+
+To upgrade
+$ pear upgrade -f package.xml