reslove git flow $'\r': command not found on Windows

reslove $'\r': command not found

under cygwin

for cygwin git

$  sed -i 's/\n\r/\n/mg' /usr/local/bin/git-flow*
$  sed -i 's/\n\r/\n/mg' /usr/local/bin/gitflow-*

for SourceTree on windows7

$ sed -i 's/\n\r/\n/mg' /c/Users/UserName/AppData/Local/Atlassian/SourceTree/gitflow_local/gitflow/git-flow*
$ sed -i 's/\n\r/\n/mg' /c/Users/UserName/AppData/Local/Atlassian/SourceTree/gitflow_local/gitflow/gitflow-*