only capture stdout if install_only is set (used by the profile task), fixes the output of 'rake device'
only capture stdout if install_only is set (used by the profile task), fixes the output of 'rake device'

katsuyoshi/RubyMotion,hboon/RubyMotion,HipByte/RubyMotion,jjaffeux/RubyMotion,jjaffeux/RubyMotion,beni55/RubyMotion,katsuyoshi/RubyMotion,katsuyoshi/RubyMotion,incbee/RubyMotion,incbee/RubyMotion,beni55/RubyMotion,incbee/RubyMotion,hboon/RubyMotion,jjaffeux/RubyMotion,HipByte/RubyMotion,beni55/RubyMotion,beni55/RubyMotion,katsuyoshi/RubyMotion,HipByte/RubyMotion,incbee/RubyMotion,hboon/RubyMotion,jjaffeux/RubyMotion