USERGRID-2807: updated version string; added instrumentation of network perf. metrics to all overloaded methods of HttpClientWrapper execute.
Merge branch 'master' into usergrid-2807
USERGRID-2807: updated monitoring sample app for Android to test all 8 code paths for overloaded execute method in HttpClient.
Merge pull request #15 from apigee/usergrid-2807

Usergrid 2807