Use chocolatey to manage dependencies

See http://chocolatey.org/ for more details

- update download URLs with working/more specific versions
- add note about missing .NET Framework
- not present at Windows Ultimate 7 N for example
- update installation notes
- fix github download link
- remove wix35 from chocolatey as it's already available
  from Mozilla Tools
upgrade Erlang/OTP options to R15B03-1