Revert "README: Add a warning about master branch"

This reverts commit 481be27.

Author: adazem009

README.md

@@ -70,10 +70,6 @@ to create a GUI application that runs Scratch projects.
 The idea is to implement Scratch blocks in C++ to build a fast project player
 that is faster than the original Scratch VM.
 
-## IMPORTANT
-**The master branch currently doesn't have all features that are mentioned below**
-**because of the work on a new compiler. Please use the v0.13.x tags.**
-
 ## NOTE
 This library is still in development and it shouldn't be used
 to build complete Scratch project players yet.