update rc version & CI branch (vesoft-inc#252)

* update rc version

* update CI branch

* clean unused import

Add more type and more test (vesoft-inc#231)

* add more test

* rebase upstream

* modify version and add more comments

* fix test failed

* address comment

upgrade java client version to 1.1.0 (vesoft-inc#216)

* modify java client version

* modify java client version

doc: updated readme of master (vesoft-inc#213)

* updated readme of master

* addressed comments

support scala doc (vesoft-inc#140)

Append developer (vesoft-inc#105)

Use Flyweight Pattern (vesoft-inc#80)

update checkstyle (vesoft-inc#59)

deploy skip example and add company info (vesoft-inc#34)

deploy skip example and add company info