Bump up requirement for php version
Bump up requirement for php version

This was correctly done on croogo/app, but never updated on croogo/croogo.

Ref: http://thread.gmane.org/gmane.comp.cms.croogo/1160/focus=1169

xintesa/croogo,delkyd/croogo,delkyd/croogo,cvo-technologies/croogo,xintesa/croogo,rakeshtembhurne/croogo,cvo-technologies/croogo,rakeshtembhurne/croogo,Wouter0100/croogo,Wouter0100/croogo,cvo-technologies/croogo,Wouter0100/croogo,delkyd/croogo,rakeshtembhurne/croogo,xintesa/croogo