When asset embed=true, embed the asset as part of the executable on Windows/Mac/Linux instead of copying it into the bin directory.
Register embedded fonts when retrieving them.
Only look for a manifest if there were one or more unembedded assets.
Standardize resource paths to avoid backslash bugs on Windows.
Only embed assets on windows/mac/linux.
Merge pull request #60 from bendmorris/master

Automatic asset embedding