Updated podspec to v0.1.1

Hi Sam,

Your commit 6286073cfd142bf8c36dd08eb2698a4de9f7efe2 (Add `-[SAMTextView placeholderRectForBounds:]`) fixes the alignment of the placeholder with the cursor on iOS 7 for me. I'm using CocoaPods and would prefer to keep using it, so I hope you can take this pull request and update the CocoaPods/Spec repository as well. 

Thanks for your hard work!

Daren