ci(travis): Corrects semantic release command.

.travis.yml

@@ -50,8 +50,8 @@ after_success:
     git fetch --tags;
     npm i semantic-release;
     npm i last-release-git;
-    semantic-release pre;
-    semantic-release post;
+    ./node_modules/.bin/semantic-release pre;
+    ./node_modules/.bin/semantic-release post;
     fi
 
 before_deploy: