CMake project for the keyword parser development added.
Implementation of the kwd directive
Use operator ->* to define keywords
Simplifying ET operator for kleene star
Merge pull request #6 from sithhell/patch-1

Simplifying ET operator for kleene star
More simplification inspired by eb47a2700137f092af33251eccc051860e3242d2.
Symbol list creation works, for now directly in the parser function.
Variant type creation works.
Pre partition keyword modification
Basic operator / works as well es keyword parsing logic
Added offset in the get_kwd_parser_types to try to fetch the right part of the tupples during attribute assignment in the parsing visitor
Keyword parser basics work !
Added some unit tests to check the combinatory of the keyword parser
Started cleaning up some code in the detail section
Finished cleaning up the detail section
Add the kwd directive generators
Unused attributes corrections
Fixed null string parsing
Code cleanup
Add the keyword tests to the Jamfile
Merge branch 'master' of https://github.com/djowel/spirit_x3 into operator