Add support for the Crystal programming language.

Author: Markus Pettersson

Diff for: resources/crystal.ascii

@@ -0,0 +1,20 @@
+{0}            ,loc;'..
+{0}          ,xNMMMWNXK0kdl,..
+{0}        ,xNMMMMMMMMMMMMMKOxoc;.
+{0}      ,xNMMMMMMMMMMMMMMMMMMMMWX:
+{0}    ,xNMMMMMMMMMMWNNWMMMMMMMMMMk.
+{0}  ,xNMMMMMWX0kdlc;:lOMMMMMMMMMMNc
+{0},xXK{1}..mmmMMMMMMMM'{0}0MMMMMMMMMMMMMO.
+{0}0o;{1}MMMMMMMMMMMMMm{0}.MMMMMMMMMMMMMMWl
+{0}0O:.{1}MMMMMMMMMMMM'{0}cMMMMMMMMMMMMMMM0'
+{0}oWWO:.{1}MMMMMMMMMm{0}.OMMMMMMMMMMMMMMMWo
+{0}'0MMWO:.{1}MMMMMMM'{0}lWMMMMMMMMMMMMMMMMK,
+{0} lWMMMWO:.{1}MMMMm{0}'0MMMMMMMMMMMMMMMMMWd
+{0} .OMMMMMW0c.{1}MM'{0}oWMMMMMMMMMMMMMMMMMWk.
+{0}  cNMMMMMMW0c{1}'{0},KMMMMMMMMMMMMMMMMW0c.
+{0}  .kMMMMMMMMW00WMMMMMMMMMMMMMMW0c.
+{0}   cNMMMMMMMMMMMMMMMMMMMMMMMW0c.
+{0}   .xWMMMMMMMMMMMMMMMMMMMMW0:.
+{0}    .';coxOKNWMMMMMMMMMMWO:.
+{0}           ..,:ldk0KXWMM:.
+{0}               ...';c:

Diff for: src/language.rs

@@ -107,6 +107,7 @@ define_languages! {
     { CMake, "cmake.ascii", "CMake", vec![Color::Blue, Color::Green, Color::Red, Color::Black] },
     { CoffeeScript, "coffeescript.ascii", "CoffeeScript", vec![Color::Red] },
     { Cpp, "cpp.ascii", "C++", vec![Color::Cyan, Color::Blue], "c++" },
+    { Crystal, "crystal.ascii", "Crystal", vec![Color::Black, Color::White] },
     { CSharp, "csharp.ascii", "C#", vec![Color::Blue, Color::Magenta], "c#" },
     { Css, "css.ascii", "CSS", vec![Color::Blue, Color::White] },
     { D, "d.ascii", "D", vec![Color::Red] },