Code changes:
 - Added java/pending_code_changes.txt for contributors to track code changes
   between releases.
 - Reduced minimum required version of cmake to 2.8.
 - Added cmake installation instructions for Mac.
 - Added getExampleNumberForType that doesn't take in a region, and
   getInvalidExampleNumber
 - Improvements to javadoc for parse method
 - Update isNumberGeographical to return true for geographical mobile numbers.