updated .gitmodules to use http instead of git protocol
updated .gitmodules to use http instead of git protocol

this allows using it through the firewall at work.

mnutt/hummingbird,soeffing/tracking_pixel,mnutt/hummingbird,umaxfun/hummingbird,soeffing/tracking_pixel,ryana/sg-stats,ramr/openshift-hummingbird-example,mikejihbe/hummingbird,umaxfun/hummingbird,ryana/sg-stats,umaxfun/hummingbird,mnutt/hummingbird,ramr/openshift-hummingbird-example,ramr/openshift-hummingbird-example,mikejihbe/hummingbird