Fix positioning bug when html is minified

Make doctype regex less greedy, otherwise it may inject in an illegal place.
Merge pull request #50 from eirikurn/patch-1

Fix injection bug when html is minified
Merge pull request #51 from HiroAgustin/master

update Readme to reflect actuall state of the code
Update README.md

update DOCTYPE regex
Merge branch 'master' of https://github.com/intesso/connect-livereload into secure-injection