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Update obsolete links (groups, android doc on code.google.com)

Update instructions related to groups

Change-Id: I29a50cb5f026f0e1e00f2d2aadcfa2a138a96a03
diff --git a/src/source/using-eclipse.md b/src/source/using-eclipse.md
index 94e24cf..803b2cc 100644
--- a/src/source/using-eclipse.md
+++ b/src/source/using-eclipse.md
@@ -21,7 +21,7 @@
 *Note: if you are looking for information on how to use
 Eclipse to develop applications that run on Android, this is not the right
 page for you. You probably would find [the Eclipse page on 
-developer.android.com](http://developer.android.com/sdk/eclipse-adt.html) more useful.*
+developer.android.com](https://developer.android.com/sdk/eclipse-adt.html) more useful.*
 
 ## Basic setup ##