Update README.md
refactor to use new json protocol
fix travis ci build
add various apis
fix for scala 2.10
Merge pull request #32 from jilen/new_json_protocol

New json protocol
index create/drop api
Merge pull request #33 from jilen/index_create_api

index create/drop api
add get api
Merge pull request #34 from jilen/get_api

add get api