Revert "Merge pull request #59 from lechup/master"

This reverts commit 3aa4524a350102e4f39ca559b45e765542aad462, reversing
changes made to e7d1581ba018d9d2855467bbaca6a37c1cd514e2.
Revert "Merge remote-tracking branch 'upstream-grokcode/change-default-configs'"

This reverts commit 567f17b1f251f7fab91e0f5af0433e3147166459, reversing
changes made to 3aa4524a350102e4f39ca559b45e765542aad462.