Added caching to classmethods parser

* added caching to classmethods parser
* added inheritance definition
* added definition file position
Merge pull request #61 from aljinovic/master

Added caching to classmethods parser

    added caching to classmethods parser
    added inheritance definition
    added definition file position
if an alternative parser returns something that can be represented in an alternative way, don't :)
PHP documentation links

added PHP documentation links for built-in methods
Merge pull request #62 from aljinovic/master

PHP documentation links for built-in methods
class method parser no longer throws exception when a parameter is declared as using an un-included class

function doSomething(\non\existing\ClassName $param){};