updated readme about how to install
updated readme about how to install

WyriHaximus/TwigView,Adnan0703/TwigView,alanrodas/TwigView,predominant/TwigView,yappabe/cakephp-twig-view,WyriHaximus/TwigView,simkimsia/TwigViewTemporary,m3nt0r/cakephp-twig-view