Added services data JSON file and Updated README for developers.

Author: adeekshith

README.md

@@ -1 +1,23 @@
 # doc-viewer-api-interface
+The project is not in development and not yet ready for production.
+# API
+`/viewer/index.html?url=http://anotherdomain.com/file.docx`
+
+## Tasks
+
+1. Supported API's and file formats supported by them are listed in `config/services.json`.
+2. Read the url parameter passed to the html page and should open it in an iFrame passing it to supported API.
+
+# Notes for Developers
+
+- If you have any issues, create an issue on project's [github page](https://github.com/parishod/doc-viewer-api-interface/issues)
+- You may modify the code and create a pull request before merging.
+- Keep code clean:
+    - Use lint and recommended code formatting tools
+    - Avoid code comments
+    - Avoid inline JS and CSS
+    - Do NOT use any libraries/frameworks unless necessary.
+    - Try using modern language features (like ES6) but make sure they are at least supported by browser versions released five months earlier. Or use transpilers (like Babel for Javascript)
+
+## Style guides
+- [JavaScript style guide by Airbnb](https://github.com/airbnb/javascript)

config/services.json

@@ -0,0 +1,71 @@
+{
+  "application":{
+    "name":"Doc Viewer API Interface",
+    "app_id":"github.com/parishod/doc-viewer-api-interface",
+    "version":"v0.1"
+  },
+  "data":{
+    "version":0.1,
+    "services":[
+      {
+        "name":"Google Docs",
+        "id":"google_docs",
+        "is_supported":true,
+        "file_extensions":[
+          "ai",
+          "csv",
+          "doc",
+          "docx",
+          "dxf",
+          "eps",
+          "odp",
+          "ods",
+          "odt",
+          "pages",
+          "pdf",
+          "pps",
+          "ppt",
+          "pptx",
+          "ps",
+          "psd",
+          "rtf",
+          "sxc",
+          "sxi",
+          "sxw",
+          "tif",
+          "tiff",
+          "ttf",
+          "wpd",
+          "xls",
+          "xlsx",
+          "xps"
+        ],
+        "file_open_API":"https://docs.google.com/viewer?url={$file_url}&embedded=false&chrome=false&dov=1"
+      },
+      {
+        "name":"Microsoft Office Online",
+        "id":"mso_online",
+        "is_supported":true,
+        "file_extensions":[
+          "doc",
+          "docx",
+          "ppt",
+          "pptx",
+          "xls",
+          "xlsx"
+        ],
+        "file_open_API":"https://docs.google.com/viewer?url={$file_url}&embedded=false&chrome=false&dov=1"
+      },
+      {
+        "name":"rollApp",
+        "id":"roll_app",
+        "is_supported":true,
+        "file_extensions":[
+          "zip",
+          "rar"
+        ],
+        "file_open_API":"https://www.rollapp.com/api/apps/open?file_url={$file_url}"
+      }
+    ]
+  }
+}