fix scss highlight (close #52)

Author: yyx990803

samples/basic.vue

@@ -12,7 +12,8 @@ Things to verify:
     <span
       v-text="foo * 10 + 'hi'"
       :id="foo + 'baz'"
-      @click="onClick('hello')">
+      @click="onClick('hello')"
+      @click.prevent="onClick('hello')">
       Hello
     </span>
   </div>

samples/langs.vue

@@ -14,6 +14,19 @@ body
   color primary-color
 </style>
 
+<style lang="scss">
+@import '~foo';
+a {
+  color: red;
+}
+</style>
+
+<style lang="sass">
+@import '~foo'
+a
+  color: red
+</style>
+
 <template lang="pug">
 div.app
   h1.title This is the app

vue.YAML-tmLanguage

@@ -159,7 +159,6 @@ patterns:
     end: (?=</(?i:style))
     patterns:
     - include: source.sass
-    - include: source.scss
 
 - name: source.scss.embedded.html
   begin: (?:^\s+)?(<)((?i:style))\b(?=[^>]*lang=(['"])scss\1?)
@@ -175,10 +174,8 @@ patterns:
       '1': {name: punctuation.definition.tag.end.html}
     end: (?=</(?i:style))
     patterns:
-    - include: source.sass
     - include: source.scss
 
-
 - name: source.less.embedded.html
   begin: (?:^\s+)?(<)((?i:style))\b(?=[^>]*lang=(['"])less\1?)
   end: (</)((?i:style))(>)(?:\s*\n)?

vue.tmLanguage

@@ -529,10 +529,6 @@
 							<key>include</key>
 							<string>source.sass</string>
 						</dict>
-						<dict>
-							<key>include</key>
-							<string>source.scss</string>
-						</dict>
 					</array>
 				</dict>
 			</array>
@@ -583,10 +579,6 @@
 					<string>(?=&lt;/(?i:style))</string>
 					<key>patterns</key>
 					<array>
-						<dict>
-							<key>include</key>
-							<string>source.sass</string>
-						</dict>
 						<dict>
 							<key>include</key>
 							<string>source.scss</string>