chore: use gulp instead of grunt

src/js/git/headless.js

@@ -138,8 +138,8 @@ HeadlessGit.prototype.sendCommand = function(value, entireCommandPromise) {
     console.log('!!!!!!!!!!!!!!!!!!!!!!');
   });
   deferred.resolve();
+  return chain;
 };
 
 exports.HeadlessGit = HeadlessGit;
 exports.getTreeQuick = getTreeQuick;
-

src/levels/mixed/describe.js

@@ -732,7 +732,7 @@ exports.level = {
         }
       ]
     },
-	"ko": {
+  "ko": {
       "childViews": [
         {
           "type": "ModalAlert",

src/levels/rampup/cherryPick.js

@@ -665,7 +665,7 @@ exports.level = {
         }
       ]
     },
-	"ko": {
+  "ko": {
       "childViews": [
         {
           "type": "ModalAlert",

src/levels/rampup/detachedHead.js

@@ -14,7 +14,7 @@ exports.level = {
     "de_DE": "Den Kopf abtrennen",
     "ja"   : "HEADの分離",
     "ru_RU": "Теряем голову, или detached HEAD",
-	  "ko"   : "HEAD 분리하기",
+    "ko"   : "HEAD 분리하기",
     "uk": "Втрачаємо голову чи detached HEAD",
     'vi': "Tháo đầu cái nào"
   },
@@ -889,7 +889,7 @@ exports.level = {
         }
       ]
     },
-	"ko": {
+  "ko": {
       "childViews": [
         {
           "type": "ModalAlert",

src/levels/rampup/interactiveRebase.js

@@ -754,7 +754,7 @@ exports.level = {
         }
       ]
     },
-	  "ko": {
+    "ko": {
       "childViews": [
         {
           "type": "ModalAlert",

src/levels/rampup/relativeRefs.js

@@ -860,7 +860,7 @@ exports.level = {
         }
       ]
     },
-	"ko": {
+  "ko": {
       "childViews": [
         {
           "type": "ModalAlert",

src/levels/rampup/relativeRefs2.js

@@ -779,7 +779,7 @@ exports.level = {
         }
       ]
     },
-	"ko": {
+  "ko": {
       "childViews": [
         {
           "type": "ModalAlert",

src/style/main.css

@@ -125,7 +125,7 @@ body,
   -webkit-box-align: center;
   -moz-box-align: center;
   -ms-flex-align: center;
-  justify-content	: center;
+  justify-content: center;
 }
 
 .startAlign {

src/template.index.html

@@ -69,12 +69,12 @@
             <p class="command"></p>
           </div>
           <textarea
-						autocomplete="off"
-						autocorrect="off"
-						autocapitalize="off"
-						spellcheck="false"
-						id="commandTextField">
-					</textarea>
+            autocomplete="off"
+            autocorrect="off"
+            autocapitalize="off"
+            spellcheck="false"
+            id="commandTextField">
+          </textarea>
         </div>
 
       </div>