Compile with -Wall -Wextra -Wpedantic

As every project should.

makefile

@@ -1,11 +1,9 @@
 #MACROS
 
-CXX_FLAGS := -O3
+CXX_FLAGS := -O3 -Wall -Wextra -Wpedantic
 
 CXX := g++ -std=c++11
 
-WARNINGS := -Wall
-
 EDITOR := gedit
 
 CURSES := -lncurses