asynchbase: set up dev environment. (https://rbcommons.com/s/pepperdata/r/4377)
- A new version number with pepperdata mark: The new jar filename is asynchbase-1.5.0.1-pepperdata.jar.
- Supported "mvn test".
- Created a symlink to com/google/protobuf/ZeroCopyLiteralByteString.java at the correct package directory.
- Supported Eclipse though four java files for integration test should be excluded manually because of incorrect package names. We will fix this issue later.
- Added files to .gitignore to support Eclipse, Intellij, pdreview, and other tools.