fix(cli): cli now works properly

The CLI was completely rewrote. Changed dependency from yargs to commanderjs,
which is cleaner, faster and has no dependencies.
Also added a complete testsuite for the cli.

Closes #893, #894

Gruntfile.js

@@ -13,12 +13,12 @@ module.exports = function (grunt) {
     pkg: grunt.file.readJSON('package.json'),
 
     concat: {
-      options: {
-        sourceMap: true,
-        banner: ';/*! <%= pkg.name %> v <%= pkg.version %> - <%= grunt.template.today("dd-mm-yyyy") %> */\n(function(){\n',
-        footer: '}).call(this);\n'
-      },
       dist: {
+        options: {
+          sourceMap: true,
+          banner: ';/*! <%= pkg.name %> v <%= pkg.version %> - <%= grunt.template.today("dd-mm-yyyy") %> */\n(function(){\n',
+          footer: '}).call(this);\n'
+        },
         src: [
           'src/options.js',
           'src/showdown.js',
@@ -30,6 +30,12 @@ module.exports = function (grunt) {
         ],
         dest: 'dist/<%= pkg.name %>.js'
       },
+      cli: {
+        src: [
+          'src/cli/cli.js'
+        ],
+        dest: 'bin/showdown.js'
+      },
       test: {
         src: '<%= concat.dist.src %>',
         dest: '.build/<%= pkg.name %>.js',
@@ -42,14 +48,23 @@ module.exports = function (grunt) {
     clean: ['.build/'],
 
     uglify: {
-      options: {
-        sourceMap: true,
-        banner: '/*! <%= pkg.name %> v <%= pkg.version %> - <%= grunt.template.today("dd-mm-yyyy") %> */'
-      },
       dist: {
+        options: {
+          sourceMap: true,
+          banner: '/*! <%= pkg.name %> v <%= pkg.version %> - <%= grunt.template.today("dd-mm-yyyy") %> */'
+        },
         files: {
           'dist/<%= pkg.name %>.min.js': ['<%= concat.dist.dest %>']
         }
+      },
+      cli: {
+        options: {
+          sourceMap: false,
+          banner: '#!/usr/bin/env node'
+        },
+        files: {
+          'bin/showdown.js': ['<%= concat.cli.dest %>']
+        }
       }
     },
 
@@ -164,6 +179,15 @@ module.exports = function (grunt) {
           ignoreLeaks: false,
           reporter: 'spec'
         }
+      },
+      cli: {
+        src: 'test/node/testsuite.cli.js',
+        options: {
+          globals: ['should'],
+          timeout: 3000,
+          ignoreLeaks: false,
+          reporter: 'spec'
+        }
       }
     }
   };
@@ -227,19 +251,14 @@ module.exports = function (grunt) {
     grunt.task.run(['lint', 'concat:test', 'simplemocha:single', 'clean']);
   });
 
-
-  /**
-   * Test in Legacy Node
-   */
-  grunt.registerTask('test-old', ['concat:test', 'simplemocha:node', 'clean']);
-
   /**
    * Tasks for new node versions
    */
   grunt.registerTask('test', ['clean', 'lint', 'concat:test', 'simplemocha:node', 'clean']);
+  grunt.registerTask('test-cli', ['clean', 'lint', 'concat:test', 'simplemocha:cli', 'clean']);
   grunt.registerTask('performance', ['concat:test', 'performancejs', 'clean']);
-  grunt.registerTask('build', ['test', 'concat:dist', 'uglify', 'endline']);
-  grunt.registerTask('prep-release', ['build', 'generate-changelog']);
+  grunt.registerTask('build', ['test', 'concat:dist', 'concat:cli', 'uglify:dist', 'uglify:cli', 'endline']);
+  grunt.registerTask('prep-release', ['build', 'performance', 'generate-changelog']);
 
   // Default task(s).
   grunt.registerTask('default', ['test']);