README.rdoc in exifr-1.3.3 vs README.rdoc in exifr-1.3.4

@@ -48,9 +48,14 @@
 
 == XMP data access
 If you need to access XMP data you can use the xmp gem.  More info and
 examples at https://github.com/amberbit/xmp
 
+== Development and running tests
+
+On a fresh checkout of the repository, run `bundle install` and then
+`bundle exec rake test`
+
 == Author
 R.W. van 't Veer
 
 == Copyright
 Copyright (c) 2006-2017 - R.W. van 't Veer