loosens up zipcode validator to accept 4 digit zipcodes (valid in the US).
replace all the non-digit characters
Merge branch 'master' of https://github.com/gercheq/bootstrapvalidator into gercheq-master

Conflicts:
	src/js/validator/phone.js
Merge branch 'master' of https://github.com/gercheq/bootstrapvalidator into gercheq-master

Conflicts:
	src/js/validator/phone.js
#182: Update the CHANGELOG
Merge remote-tracking branch 'origin/master'