decrease deployment target to 7.1
decrease deployment target to 7.1

jasongorski/libbpg-xcode,jasongorski/libbpg-xcode,jasongorski/libbpg-xcode,jasongorski/libbpg-xcode,jasongorski/libbpg-xcode,jasongorski/libbpg-xcode,jasongorski/libbpg-xcode