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Update README.md
Update README.md
New Icons for iOS 7
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New Screenshot from iOS 7
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Update TTOpenInAppActivity.m
Only perform if there is a single URL object inside the activityItems.
Merge pull request #6 from tomco/master

Only perform if there is a single URL object inside the activityItems.
Merge pull request #7 from gshaviv/master

weak delegate instead of unsafe
Update README.md