Documenting the syntax in BNF

git-svn-id: http://svn.code.sf.net/p/angelscript/code@2068 404ce1b2-830e-0410-a2e2-b09542c77caf
dictionaryValue has better support for boolean values


git-svn-id: http://svn.code.sf.net/p/angelscript/code@2069 404ce1b2-830e-0410-a2e2-b09542c77caf