Remove temp dir after create.spec.js test (#40)

diff --git a/tests/spec/unit/create.spec.js b/tests/spec/unit/create.spec.js
index 8094478..1053044 100644
--- a/tests/spec/unit/create.spec.js
+++ b/tests/spec/unit/create.spec.js
@@ -142,5 +142,8 @@
         create.createProject(tmpDir, projectname, projectid, projectname);
 
         expect(emitSpy).toHaveBeenCalledWith('error', 'Please make sure you meet the software requirements in order to build a cordova electron project');
+
+        // clean-up
+        fs.removeSync(tmpDir);
     });
 });