ci(travis.yml): update script

Author: uid10804

.travis.yml

@@ -4,7 +4,7 @@ git:
 language: node_js
 env:
   global:
-    - COMMITCOUNT=$(git log $(git describe --tags --abbrev=0)..HEAD --oneline|grep -iv 'revert' |grep -e 'fix(' -e 'feat(' | wc -l | awk '{print $1}')
+    - COMMITCOUNT="$(git log $(git describe --tags --abbrev=0)..HEAD --oneline|grep -iv 'revert' |grep -e 'fix(' -e 'feat(' | wc -l | awk '{print $1}')"
 cache:
   directories:
     - ~/.npm