Fixes #62 : set minimum php version to >=5.4.0
Fixes #62 : set minimum php version to >=5.4.0

acelaya/LearnZF2,acelaya/LearnZF2,jkhaled/LearnZF2,jkhaled/LearnZF2,sitrunlab/LearnZF2,Stanimirdim92/LearnZF2,Stanimirdim92/LearnZF2,sitrunlab/LearnZF2,jkhaled/LearnZF2,samsonasik/LearnZF2,Stanimirdim92/LearnZF2,acelaya/LearnZF2,samsonasik/LearnZF2,sitrunlab/LearnZF2,samsonasik/LearnZF2