Move to grunt for building all distribution files.

* canonical version number of jasmine-core is now is package.json
* `grunt buildDistribution` builds jasmine.js, jasmine-html.js, jasmine.css and outputs them to the dist dir
* `grunt buildStandaloneDist` builds the example spec runner files and compresses them to dist/jasmine-VERSION.zip
* `grunt compass` compiles jasmine.css
* jasmine.Env handling of version is backwards compatible, but uses the version string directly (and nicely deprecated)
* Ruby/thor tasks that did the above deleted

lib/jasmine-core/jasmine-html.js

@@ -16,7 +16,7 @@ jasmine.HtmlReporter = function(options) {
     htmlReporterMain = createDom("div", {className: "html-reporter"},
       createDom("div", {className: "banner"},
         createDom("span", {className: "title"}, "Jasmine"),
-        createDom("span", {className: "version"}, env.versionString())
+        createDom("span", {className: "version"}, jasmine.version)
       ),
       createDom("ul", {className: "symbol-summary"}),
       createDom("div", {className: "alert"}),
@@ -239,13 +239,15 @@ jasmine.HtmlReporter = function(options) {
   function setMenuModeTo(mode) {
     htmlReporterMain.setAttribute("class", "html-reporter " + mode);
   }
-};jasmine.HtmlSpecFilter = function(options) {
+};
+jasmine.HtmlSpecFilter = function(options) {
   var filterPattern = new RegExp(options && options.filterString());
 
   this.matches = function(specName) {
     return filterPattern.test(specName);
   };
-};jasmine.ResultsNode = function(result, type, parent) {
+};
+jasmine.ResultsNode = function(result, type, parent) {
   this.result = result;
   this.type = type;
   this.parent = parent;
@@ -259,7 +261,8 @@ jasmine.HtmlReporter = function(options) {
   this.last = function() {
     return this.children[this.children.length-1];
   };
-};jasmine.QueryString = function(options) {
+};
+jasmine.QueryString = function(options) {
 
   this.setParam = function(key, value) {
     var paramMap = queryStringToParamMap();