consistent formatting

README.md

@@ -4,7 +4,7 @@ edX Demonstration Course
 This is a demonstration course you can import into edX Studio.
 
  * Download the [gzipped tarball](https://github.com/edx/edx-demo-course/releases/download/1.0/edx_demo_course_1_0.tar.gz). 
- * In Studio, create an empty course
+ * In Studio, create an empty course.
  * Under Tools, select Import and choose the downloaded, gzipped tarball.
 
 All content is made available under a Creative Commons BY-NC-SA 3.0 US License