Fixed dspace_rest_client gem path

Signed-off-by: Israel Barreto Sant'Anna <ibsa14@inf.ufpr.br>

Gemfile

@@ -36,7 +36,7 @@ gem 'rack-cors', require: 'rack/cors'
 gem 'rmagick'
 
 # Dspace REST API Integration
-gem 'dspace_rest_client', '2.2.8'
+gem 'dspace_rest_client', github: 'mgiacomini/dspace-rest-client', branch: 'master'
 
 # pretty logs
 gem 'rainbow'