Init project

[spenserblack]

• Add test for regex matching
• Add overall matches function
• Implement Analyzers::exec Analyzers::pick
• Add code coverage
• Switch from tera to macro? Dropped tera to interpret at runtime for now.
  • Possibly check regexes here to trigger compiler errors
• Use generic <T: Into<OsString>> nevermind.
• Change from large new function to using a builder?
• Change priority from 0.0 to 1.0 to 0 to 100?
• shebang matching (should always be a higher priority than filepath matches)
• fn to return if file is generated
• fn to return if file is vendored
• fn to return if file is documentation
• Gengo struct that contains Analyzers, configuration, etc.
• Read from .gitattributes
• document hacking (developing, testing)
• document contributing
• Separate is-documentation, is-generated, etc. into read and no-read methods for performance