v2.3.0

Setup:

[setup] update npm and git ignore ee1e34e
[setup] ignore node 5 in travis and appveyor a9aa850

Changes:

[add] flow config and rules 5ef665f
[refactoring] move flow config test files into /test/flow/rules/flow … … 4d78496
[bugfix] fix parsing error 6a8ddde

Tests

[tests] add tests for flow rules d8bf6a4

Documentation:

[doc] upgrade readme for flow 74c38c8
[doc] add documentation for flow eslint config 14dbf83