cleanup leftover from merge conflict
fix expanding zip files created on Windows

- replace path seperator ('\\' with '/')
- ignore windows specific file attributes
don't zip .git* and .DS_Store files
Merge pull request #40 from MartinNowak/cleanupMergeConflict

cleanup leftover from merge conflict
Merge pull request #41 from MartinNowak/fixPathSeperators

fix expanding zip files created on Windows
Merge pull request #42 from MartinNowak/zipIgnoreRules

don't zip .git* and .DS_Store files
cleanup leftover from merge conflict
fix expanding zip files created on Windows

- replace path seperator ('\\' with '/')
- ignore windows specific file attributes
Merge branch 'master' of git://github.com/D-Programming-Language/installer