Re-applying the manual installation instructions to the docs.

Author: jeffswartz

README.md

@@ -35,6 +35,14 @@ dependencies {
 }
 ```
 
+## Manually:
+
+Download the zip file for the latest release from the
+[Releases](https://github.com/opentok/opentok-java-sdk/releases) page. This zip contains a jars for
+the OpenTok Java SDK and its dependencies. Include these in the classpath for your own project by
+[using the JDK directly](http://docs.oracle.com/javase/7/docs/technotes/tools/windows/classpath.html)
+or in your IDE of choice.
+
 # Usage
 
 ## Initializing