Add yarn.lock (#1035) Since many people are like going to use `yarn` over `npm`, it's probably a good idea to add this
diff --git a/.gitignore b/.gitignore
index ea5cfc7..d964118 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,5 @@
hide-*.js
node_modules
.idea/
-.DS_Store
\ No newline at end of file
+.DS_Store
+yarn.lock