Syncbase.js: Adding a basic README.md similar to the one in core.js

Change-Id: Icd6dd44a489bc6801892b174383fee7f4c5805fc
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+# Syncbase JavaScript Client
+
+This repository defines the JavaScript API for [Syncbase], a structured store
+that supports peer-to-peer synchronization.
+
+The client APIs defined here work both in [Node.js] and the browser.
+
+## Install
+Since Vanadium is currently hosted in private repositories, you would need to
+[setup SSH keys for Github]
+(https://help.github.com/articles/generating-ssh-keys/)
+first and then use npm to install directly from GitHub:
+
+    npm install --save git+ssh://git@github.com:vanadium/js.syncbase.git
+
+currently `vanadium.js` needs to be installed manually as well:
+
+    npm install --save git+ssh://git@github.com:vanadium/js.git
+
+## Usage
+
+Documentation for this API is [TODO(aghassemi)](LINK TO JS DOCUMENTATION)
+
+Tutorials can be found at [TODO(aghassemi)](LINK TO JS TUTORIAL FOR SYNCBASE)
+
+The entry point to the API is through a module called `syncbase`,
+everything else is considered private and should not be accessed by the users
+of the API.
+
+When using [Browserify] or [Node.js] users can gain access to the API with:
+
+    var syncbase = require("syncbase");
+
+When run in a browser, sycnbase expects that the [vanadium
+extension](https://v.io/tools/vanadium-chrome-extension.html) will be
+installed.
+
+## Bugs and feature requests
+
+Bugs and feature requests should be filed in the
+[Vanadium issue tracker](https://github.com/vanadium/issues/issues).
+
+## Building and testing
+
+GNU Make is used to build and test [Syncbase].
+
+Build everything:
+
+    make
+
+Test everything:
+
+    make test
+
+Run a specific test suite:
+
+    make test-integration
+    make test-integration-node
+    make test-integration-browser
+
+Remove all build and testing artifacts:
+
+    make clean
+
+[Syncbase]: https://v.io/syncbase
+[Node.js]: https://nodejs.org/
+[Browserify]: http://browserify.org/