Ignore JetBrains Rider meta files.

Author: gertjvr

.gitignore

@@ -129,7 +129,7 @@ publish/
 # Publish Web Output
 *.[Pp]ublish.xml
 *.azurePubxml
-# TODO: Comment the next line if you want to checkin your web deploy settings 
+# TODO: Comment the next line if you want to checkin your web deploy settings
 # but database connection strings (with potential passwords) will be unencrypted
 *.pubxml
 *.publishproj
@@ -196,3 +196,6 @@ FakesAssemblies/
 *.opt
 *.orig
 project.lock.json
+
+# JetBrains Rider
+.idea