Update README.md

Author: SUPERCILEX

auth/README.md

@@ -62,7 +62,6 @@ repositories {
 Firebase-UI-auth v1.0.0 is incompatible with the v25 support libraries. Please upgrade to v1.0.1
 to use the latest version of the support libraries.
 
-
 ### Identity provider configuration
 
 In order to use either Google, Facebook or Twitter accounts with your app, ensure that