add message log
Merge branch 'master' into dev
better error message
better error message
Merge branch 'master' into dev
add sha and hmac-sha1
add example injectlaunch to show how to inject code
Merge branch 'master' into dev
Ignore DS_Store file for Mac OS X users
Merge pull request #165 from chuenlungwang/master

Ignore DS_Store file for Mac OS X users