Add estraverse-fb to dependencies
Add estraverse-fb to dependencies

Shouldn’t need to be there explicitly but the Travis build is failing
for lack of it…

popcodeorg/popcode,popcodeorg/popcode,outoftime/learnpad,jwang1919/popcode,jwang1919/popcode,outoftime/learnpad,jwang1919/popcode,popcodeorg/popcode,popcodeorg/popcode,jwang1919/popcode