Added a readme file.
Added a readme file.

google/gjstest,aungzanbaw/gjstest,okdave/gjstest,google/gjstest,okdave/gjstest,aungzanbaw/gjstest,aungzanbaw/gjstest,google/gjstest,aungzanbaw/gjstest,google/gjstest,okdave/gjstest,okdave/gjstest