GMP Support (see description)

Removed GMP support from TODOs and updated README.md with a message about GMP support.

README.md

@@ -1,6 +1,8 @@
 # Collatz conjecture solver
 ### (x%2==0) ? x/=2 : x=x*3+1;
 
+## You probably want the GMP version for arbitrarily big numbers. Get it from the (GMP branch)[https://git.sdf.org/ilikecats/collatz/src/branch/gmp].
+
 Program to solver the (Collatz conjecture)[https://en.wikipedia.org/wiki/Collatz_conjecture].
 
 Algorithm:

TODO.md

@@ -1,4 +1,3 @@
 # TODO:
--  Use GMP for numbers (to allow for really big numbers)
 -  Make disproving mode
 -  Make no print mode (for speed, implement after disproving mode)

main.cpp

@@ -2,7 +2,6 @@
 #include <string>
 
 // TODO:
-//  Use GMP for numbers (to allow for really big numbers)
 //  Make disproving mode
 //  Make no print mode (for speed, implement after disproving mode)