bash < <(curl -s -S -L https://raw.githubusercontent.com/moovweb/gvm/master/binscripts/gvm-installer)
gvm install go1.4
gvm use go1.4
gvm install go1.5.1
gvm use go1.5.1
gvm pkgset create project1
gvm pkgset use project1
###some go get
gvm pkgset create project2
gvm pkgset use project2
###some other go get