Update prettydiff to 2.2.7, change UX Markup to xml

package.json

@@ -179,7 +179,7 @@
     "node-dir": "0.1.17",
     "node-uuid": "1.4.8",
     "open": "0.0.5",
-    "prettydiff2": ">2.2.5",
+    "prettydiff2": "^2.2.7",
     "pug-beautify": "^0.1.1",
     "remark": "6.0.1",
     "season": "6.0.0",

src/beautifiers/prettydiff.coffee

@@ -81,8 +81,6 @@ module.exports = class PrettyDiff extends Beautifier
       switch language
         when "CSV"
           lang = "csv"
-        when "Coldfusion"
-          lang = "html"
         when "EJS", "Twig"
           lang = "ejs"
         when "ERB"
@@ -91,9 +89,9 @@ module.exports = class PrettyDiff extends Beautifier
           lang = "handlebars"
         when "SGML"
           lang = "markup"
-        when "XML", "Visualforce", "SVG"
+        when "XML", "Visualforce", "SVG", "UX Markup"
           lang = "xml"
-        when "HTML", "Nunjucks", "UX Markup"
+        when "HTML", "Nunjucks", "Coldfusion"
           lang = "html"
         when "JavaScript"
           lang = "javascript"