Grammar.

Author: michael

README.md

@@ -15,7 +15,7 @@ var github = new Github({
 var repo = github.getRepo(reponame);
 
 // Store contents at a certain path (assumes UTF-8)
-// Files that doesn't exist are created on the fly.
+// Files that don't yet exist are created on the fly.
 
 repo.write('path/to/file', 'YOUR_NEW_CONTENTS', 'YOUR_COMMIT_MESSAGE', function(err) {