New ctags-develop hook for phpcomplete

Hi, I'm using a patched build of ctags to support newer PHP language constructs, so I've made an alternative hook as the parameters are different. Still works in exactly the same way though. Info here: https://github.com/shawncplus/phpcomplete.vim/wiki/Patched-ctags

Also a bit of a tidy and tweaked the readme with some extra info (which would have saved me a mornings troubleshooting!!).