Adding a default port for the connection to the database

On HHVM an exception is thrown like what it is not a number.
Merge branch '1.2'

* 1.2:
  Fixed Form Provider documentation
  Fix: Add missing method visibility in interface excerpts
  Adding a default port for the connection to the database
  Simplify installation instructions
  simplified Composer instructions

Conflicts:
	README.rst
	doc/providers.rst
	doc/usage.rst