Update NEWS

- Add `.md` extension
- Add `##` (h2) to each version

NEWS.md

@@ -1,11 +1,13 @@
 factory_bot_rails versioning is synced with factory_bot releases. For this reason
 there might not be any notable changes in new versions of this project.
 
-5.0.1
+# NEWS
+
+## 5.0.1
   Bugfix: Avoid watching files and directories that don't exist (to avoid a
   file watching bug in Rails https://github.com/rails/rails/issues/32700)
 
-5.0.0
+## 5.0.0
   Added: calling reload! in the Rails console will reload any factory definition files that have changed
   Added: support for custom generator templates
   Added: definition_file_paths configuration option, making it easier to place factories in custom locations
@@ -13,36 +15,36 @@ there might not be any notable changes in new versions of this project.
   Changed: added newline between factories generated into the same file
   Removed: support for EOL version of Ruby and Rails
 
-4.11.1 (September 7, 2018)
+## 4.11.1 (September 7, 2018)
   Update generator to use dynamic attributes instead of deprecated static attributes
 
-4.11.0 (August 16, 2018)
+## 4.11.0 (August 16, 2018)
   No notable changes
 
-4.10.0 (May 25, 2018)
+## 4.10.0 (May 25, 2018)
   No notable changes
 
-4.8.2 (October 20, 2017)
+## 4.8.2 (October 20, 2017)
   Rename factory_girl_rails to factory_bot_rails
 
-4.7.0 (April 1, 2016)
+## 4.7.0 (April 1, 2016)
   No notable changes
 
-4.6.0 (February 1, 2016)
+## 4.6.0 (February 1, 2016)
   No notable changes
 
-4.5.0 (October 17, 2014)
+## 4.5.0 (October 17, 2014)
   Improved README
 
-4.4.1 (February 26, 2014)
+## 4.4.1 (February 26, 2014)
   Support Spring
 
-4.2.1 (February 8, 2013)
+## 4.2.1 (February 8, 2013)
   Fix bug when configuring FG and RSpec fixture directory
   Remove debugging
   Require factory_girl_rails explicitly in generator
 
-4.2.0 (January 25, 2013)
+## 4.2.0 (January 25, 2013)
   Add appraisal and get test suite working reliably with turn gem
   Support MiniTest
   Allow a custom directory for factories to be specified