fix(SublimeText2.WebPackages): find node safer

 - use a fallback and write a warning when node.exe can't be found
 - try to use current PATH, then standard program files directory, then
  chocolatey bin root
chore(SublimeText2.WebPackages): release 0.1.1
fix(SublimeText2.UtilPackages): default ps paths

 - When searching for Powershell, be more resilient, search on disk
   for known locations and fallback to sensible default
chore(SublimeText2.UtilPackages): release 0.1.1