Output json result.
Reverting "Output json result."
Revert "Output json result."

This reverts commit 3ce5d801ecc11e5aecb08f986adb3f3a5f45a0c7.
callback -> cb.
Use more specific JSON parsing code for errors.
Also return the meta for errors.
Hopefully make #get test reliable.
Merge branch 'feature/fix-travis' into develop