use "CMSSW_VERSION" instead of "CMSSW_BASE" to determine the CMSSW version
Merge pull request #147 from TaiSakuma/fix-141120_02

change the way to determine the CMSSW version in CMG_MiniAOD_Lite_V6_0_from-CMSSW_7_0_6
Merge branch 'CMG_MiniAOD_Lite_V6_0_from-CMSSW_7_0_6' of https://github.com/CERN-PH-CMG/cmg-cmssw into CMG_MiniAOD_Lite_V6_0_from-CMSSW_7_0_6