Remove podspec for EmojiKeyboard as replaced by AGEmojiKeyboard
Revert "Remove podspec for EmojiKeyboard as replaced by AGEmojiKeyboard"

This reverts commit c1b526d4b0a7deea50e55c8eabbbfc753eb7f3e3.
Add depracation declaration to EmojiKeyboard podspec

Deprecated in favor of 'AGEmojiKeyboard' (https://github.com/ayushgoel/AGEmojiKeyboard).
Correct syntax for deprecation declaration
Merge pull request #11798 from ayushgoel/master

Remove podspec for EmojiKeyboard as replaced by AGEmojiKeyboard