Merge pull request #1 from Ribs-organization/Piou-piou-patch-1 - hacktoberfest-accepted

[edit] readme to add things that ribs core does

Author: Piou-piou

README.md

@@ -1,2 +1,9 @@
 # RibsCore
 this package regroup all functions that could be needed in other ribs packages
+ 
+ ## Features
+- Get height of an element
+- Get width of an element
+- ToggleSlide an element
+- Wrap an element
+- Validate email and password