Fix #976 Build output doesn't have BOMs

The problem was that the line-ending task ran after the add-bom task and
happened to remove the BOM. Swapping the order of these tasks causes the
build output to have both a BOM and the correct line endings.

It would be nice to have a build task that runs during "release" that
fails the build if the output is missing a BOM or has the wrong line
endings.

gruntfile.js

@@ -61,7 +61,7 @@
         // Private tasks (not designed to be used from the command line)
         grunt.registerTask("_copyFinal", ["copy:tests", "copy:testDeps", "copy:fonts", "copy:intellisense"]);
         grunt.registerTask("_copyToTsBuild", ["copy:srcjs"]);
-        grunt.registerTask("_postProcess", ["add-bom", "line-endings"]);
+        grunt.registerTask("_postProcess", ["line-endings", "add-bom"]);
 
         // Other tasks
         grunt.registerTask("modules", ["clean:modules", "build-modules", "replace:base"]);