Addresses await keyword coloring.

Fixes #74.

Author: rbuckton

TypeScript.YAML-tmLanguage

@@ -323,7 +323,7 @@ repository:
 
   await-modifier:
     name: storage.modifier.ts
-    match: 'await'
+    match: '\bawait\b'
 
   type-operator:
     name: keyword.operator.type.ts

TypeScript.tmLanguage

@@ -73,7 +73,7 @@
 		<key>await-modifier</key>
 		<dict>
 			<key>match</key>
-			<string>await</string>
+			<string>\bawait\b</string>
 			<key>name</key>
 			<string>storage.modifier.ts</string>
 		</dict>

tests/baselines/awaitColoring.txt

@@ -0,0 +1,2 @@
+[1, 1]: source.ts storage.modifier.ts 
+[2, 1]: source.ts 

tests/cases/awaitColoring.ts

@@ -0,0 +1,2 @@
+^await 1;
+^awaiting 1;