ability to add tweets to pictures and signup activity
updated manifest
Merge branch 'master' of https://github.com/mlidge/tweak-the-tweet

Conflicts:
	TweaktheTweet/AndroidManifest.xml
	TweaktheTweet/res/values/strings.xml
	TweaktheTweet/src/uw/changecapstone/tweakthetweet/MainActivity.java