add README.md

README.md

@@ -1,8 +1,7 @@
 # button
 
-This repository contains code for solving [button.qedaka.de](https://button.qedaka.de). The goal of the game is to
-press a button as many times as possible. To verify the button has actually been pressed, a "proof of work" has to be
-provided. There are eight challenges in total – each of which uses a different kind of "proof of work":
+This repository contains code for solving the challenges from [button.qedaka.de](button.qedaka.de). There are eight
+challenges in total:
 - [01_welcome](./js/01_welcome.js)
 - [02_these_numbers_are_big](./js/02_these_numbers_are_big.js)
 - [03_are_you_still_doing_this_by_hand](./js/03_are_you_still_doing_this_by_hand.js)
@@ -15,5 +14,5 @@ provided. There are eight challenges in total – each of which uses a diffe
 Challenges one through four are trivial to solve. For challenges five through eight there is one binary each which
 demonstrates an approach to a solution.
 
-One additional binary for solving the whole game from start to finish is provided.
+One additional binary for solving the whole puzzle from start to finish is provided.