Add jQuery JSCS style checking

Grunt is bumped due to a bad peerDependency in the grunt plugin

Gruntfile.js

 /*jshint node: true */
 module.exports = function(grunt) {
 
-	// Project configuration.
-	grunt.initConfig({
-		// Metadata.
-		pkg: grunt.file.readJSON("package.json"),
-		banner: "/*! <%= pkg.name %> - v<%= pkg.version %> - " +
-			"* Copyright (c) <%= grunt.template.today('yyyy') %> IOLA and <%= pkg.author.name %>;" +
-			" Licensed <%= pkg.license %> */\n",
-		// Task configuration.
-		uglify: {
-			options: {
-				banner: "<%= banner %>"
-			},
-			dist: {
-				expand: true,
-				flatten: true,
-				src: ["jquery.*.js", "!jquery.js"],
-				dest: "dist/",
-				rename: function(base, path) {
-					return base + path.replace(/\.js/, ".min.js");
-				}
-			}
-		},
-		jshint: {
-			options: grunt.file.readJSON(".jshintrc"),
-			gruntfile: {
-				src: "Gruntfile.js"
-			},
-			flot: {
-				src: ["jquery.flot*.js"]
-			}
-		},
-		watch: {
-			gruntfile: {
-				files: "Gruntfile.js",
-				tasks: ["jshint:gruntfile"]
-			},
-			flot: {
-				files: "<%= jshint.flot.src %>",
-				tasks: ["jshint:flot"]
-			}
-		}
-	});
+    // Project configuration.
+    grunt.initConfig({
+        // Metadata.
+        pkg: grunt.file.readJSON("package.json"),
+        banner: "/*! <%= pkg.name %> - v<%= pkg.version %> - " +
+            "* Copyright (c) <%= grunt.template.today('yyyy') %> IOLA and <%= pkg.author.name %>;" +
+            " Licensed <%= pkg.license %> */\n",
+        // Task configuration.
+        uglify: {
+            options: {
+                banner: "<%= banner %>"
+            },
+            dist: {
+                expand: true,
+                flatten: true,
+                src: ["jquery.*.js", "!jquery.js"],
+                dest: "dist/",
+                rename: function(base, path) {
+                    return base + path.replace(/\.js/, ".min.js");
+                }
+            }
+        },
+        jshint: {
+            options: grunt.file.readJSON(".jshintrc"),
+            gruntfile: {
+                src: "Gruntfile.js"
+            },
+            flot: {
+                src: ["jquery.flot*.js"]
+            }
+        },
+        watch: {
+            gruntfile: {
+                files: "Gruntfile.js",
+                tasks: ["jshint:gruntfile"]
+            },
+            flot: {
+                files: "<%= jshint.flot.src %>",
+                tasks: ["jshint:flot"]
+            }
+        },
+        jscs: {
+            options: {
+                "requireCurlyBraces": [ "if", "else", "for", "while", "do" ],
+                "requireSpaceAfterKeywords": [ "if", "else", "for", "while", "do", "switch", "return" ],
+                "requireSpacesInFunctionExpression": {
+                    "beforeOpeningCurlyBrace": true
+                },
+                "disallowSpacesInFunctionExpression": {
+                    "beforeOpeningRoundBrace": true
+                },
+                "requireMultipleVarDecl": true,
+                "requireSpacesInsideObjectBrackets": "all", // Different from jQuery preset
+                "disallowSpacesInsideArrayBrackets": true, // Different from jQuery preset
+                "disallowLeftStickedOperators": [ "?", "-", "/", "*", "=", "==", "===", "!=", "!==", ">", ">=", "<", "<=" ],
+                "disallowRightStickedOperators": [ "?", "/", "*", ":", "=", "==", "===", "!=", "!==", ">", ">=", "<", "<="],
+                "requireSpaceBeforeBinaryOperators": ["+", "-", "/", "*", "=", "==", "===", "!=", "!=="],
+                "disallowSpaceAfterPrefixUnaryOperators": ["++", "--", "+", "-"],
+                "disallowSpaceBeforePostfixUnaryOperators": ["++", "--"],
+                "requireRightStickedOperators": [ "!" ],
+                "requireLeftStickedOperators": [ "," ],
+                "disallowKeywords": [ "with" ],
+                "disallowMultipleLineBreaks": true,
+                "disallowKeywordsOnNewLine": [ "else" ],
+                "requireLineFeedAtFileEnd": true,
+                "disallowSpaceAfterObjectKeys": true,
+                "validateJSDoc": {
+                    "checkParamNames": true,
+                    "checkRedundantParams": true,
+                    "requireParamTypes": true
+                },
+                "validateQuoteMarks": "\"",
+                reporter: "checkstyle",
+                reporterOutput: "jscs.xml"
+            },
+            flot: {
+                src: "<%= jshint.flot.src %>"
+            }
 
-	// These plugins provide necessary tasks.
-	grunt.loadNpmTasks("grunt-contrib-uglify");
-	grunt.loadNpmTasks("grunt-contrib-jshint");
-	grunt.loadNpmTasks("grunt-contrib-watch");
+        }
+    });
 
-	// Default task.
-	grunt.registerTask("default", ["jshint", "uglify"]);
+    // These plugins provide necessary tasks.
+    grunt.loadNpmTasks("grunt-contrib-uglify");
+    grunt.loadNpmTasks("grunt-contrib-jshint");
+    grunt.loadNpmTasks("grunt-contrib-watch");
+    grunt.loadNpmTasks("grunt-jscs-checker");
+
+    // Default task.
+    grunt.registerTask("default", ["jshint", "uglify"]);
 
 };

package.json

@@ -36,10 +36,11 @@
     "url": "https://github.com/flot/flot/issues"
   },
   "devDependencies": {
-    "grunt": "~0.4.1",
+    "grunt": "~0.4.2",
     "grunt-contrib-jshint": "~0.6.4",
     "grunt-contrib-uglify": "~0.2.4",
-    "grunt-contrib-watch": "~0.5.3"
+    "grunt-contrib-watch": "~0.5.3",
+    "grunt-jscs-checker": "~0.3.2"
   },
   "maintainers": [
     {