Immediately update the EditText contents when the emojicon size is changed.

Conflicts:
	library/src/main/java/com/rockerhieu/emojicon/EmojiconEditText.java
Removed uses of the "this" keyword.
The emojicon size was not consistently taking effect when it was set after the text was set.
Merge pull request #30 from tictocplanet/update-text

Update text