Fix branch layout

Author: golbin

controller/branch.js

@@ -57,7 +57,7 @@ var branch = {
     });
 
     view.list.key(['C-a'], function () {
-      view.prompt.input('Input a branch name', '', function (err, value) {
+      view.prompt.input('Input the new branch name', '', function (err, value) {
         try {
           parent.git.addBranch(value);
           branch.show();

view/style/branch.json

@@ -66,7 +66,7 @@
     "prompt": {
         "top": "center",
         "left": "center",
-        "width": "50%",
+        "width": "80%",
         "height": "shrink",
         "border": "line",
         "align": "left",