Add options, Add method to update text

Added option: isRounded, distance, edgeInsets
Update README.md
Update README.md
Update README.md
I better not touching it as I am creating pull-request to original repo
Revert "Update README.md"

This reverts commit f18c101646c839301c350cdd54d10606e75d2ad2.

Conflicts:
	README.md
Merge branch 'Seitk-master'
Merged PR #19.