Add login ui and activity resources.
Add Twitter API for testing the sample code on the Learning Android Book
Remove Twitter API sample code that does not work in the project
Add login menu and LoginActivity invoke code to ViewSearchActivity
Add login button and click event
Import infinitibeat-engine-lib source codes to refactor, use in Android development
Remove no use package and class from infinitibeat-engine-lib
Add JDBC API to test the database connection creation (but failed, issue #3)
Move JDBC API to AsyncTask class code segment, and does work. (#3)