Updates

[MoritzKn]

This PR does:

• Change the scope of the options from string to constant (this fixes #1). This is inspired by hash arguments in Ruby which have the scope: constant.other.symbol.hashkey.ruby.

• Fix single quoted string escape pattern. The old pattern recognized a single backslash a escape sequence but that's not correct.

• Remove variables from single quoted string patterns. Variables aren't substituted in single quoted strings so they shouldn't be highlighted.

• Fix handling of escaped characters (this fixed #8). The regex for escaped characters outside of strings was broken in that it:

  • didn't probably escaped the characters ( and ) for the regex,
  • didn't include quotes.

• Add indention patterns. Atom uses these to automatically adjust the indention level while typing.

[davidcelis]

Thanks a bunch! I've release 1.1.0 with these changes