Update Readme with Maven/Gradle install instructions

Just like described in here: https://groups.google.com/forum/#!topic/vertx/hLX3jM9cpgA
fixed grammar

hopefully
Merge pull request #2 from CansaSCitySchuffle/master

Added instruction how to setup a Maven/Gradle Project for PHP
Initial commit
Fix merge conflicts in README.
Move PHP mod package to io.vertx.
Ensure newly packaged resources are properly copied when building the module.
Add CONTRIBUTING file.
Rename LICENSE to LICENSE.txt.
added test to show execption when someone tries to print in a closure
Added a Test for printing in simple closures
cleaned messup
Merge branch 'test-print-in-proc' of github.com:CansaSCityShuffle/mod-lang-php into test-print-in-proc