Add git submodule step for travis build
Add git submodule step for travis build

Zauberstuhl/jsxc,diaspora/jsxc,svbergerem/jsxc,svbergerem/jsxc,pravi/jsxc,svbergerem/jsxc,Zauberstuhl/jsxc,Zauberstuhl/jsxc,diaspora/jsxc,diaspora/jsxc,pravi/jsxc,pravi/jsxc