add gnvm install test code
add download exe process logic
add gnmv install console print logic
add gnvm install logic
add gnvm install x.xx.xx y.yy.yy logic
optimize registry format without '/'
optimize when folder exist, not install.
optimize when folder exist, not install.
modify gnvm install copywritting.
modify gnvm install copywritting.
Fixbug of change HasPrefix to HasSuffix
add gnvm install latest logic
optimize gnvm install logic
optimize gnvm install latest logic
add gnvm install x.xx.xx --global
add gnvm install x.xx.xx --global only one parameter
add gnvm install parameter logic
Fixbug of download exe size error logic
Fixbug of modify gnvm install copywritting
Fixbug of getLatestVersionByRemote() return EOF logic.