Details on multiple Python2 and Python3 versions.
Details on multiple Python2 and Python3 versions.

Add detail regarding activating multiple Python2 and Python3 versions simultaneously.
dongguangming/pyenv,pyenv/pyenv,pyenv/pyenv,syndbg/goenv,dnsd/pyenv,syndbg/goenv,sebhahn/pyenv,sebhahn/pyenv,VShangxiao/pyenv,genome-vendor/pyenv,obimod/pyenv,BanzaiMan/pyenv,hlecuanda/pyenv,UCASREN/pyenv,obimod/pyenv,cehoffman/pyenv,habinmusic/pyenv,syndbg/goenv,zmwangx/pyenv,yyuu/pyenv,fly19890211/pyenv,sebhahn/pyenv,lozybean/pyenv,BanzaiMan/pyenv,yyuu/pyenv,pyenv/pyenv,yeonsh/pyenv,dongguangming/pyenv,zmwangx/pyenv,fly19890211/pyenv,recruit-mtl/pyenv,VShangxiao/pyenv,recruit-mtl/pyenv,yeonsh/pyenv,takluyver/pyenv,xshwy/pyenv,UCASREN/pyenv,habinmusic/pyenv,lozybean/pyenv,chenfengyuan/pyenv,rowhit/pyenv,xshwy/pyenv,genome-vendor/pyenv,cehoffman/pyenv,hlecuanda/pyenv,chenfengyuan/pyenv,rowhit/pyenv,takluyver/pyenv,syndbg/goenv,dnsd/pyenv