Added HangmanGame class, but does not work yet

Dependencies:   SDFileSystem app epson mbed msp430 pl tests

Revision:
0:fa7450a43b99
diff -r 000000000000 -r fa7450a43b99 pl.lib
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/pl.lib	Mon Dec 04 09:32:20 2017 +0000
@@ -0,0 +1,1 @@
+https://developer.mbed.org/users/markpsymonds/code/pl/#053307432398