README: Added wget & bzip2 to apt-get.

README.md

@@ -47,7 +47,7 @@ Ubuntu 14.04:
 ```
 $ sudo apt-get install make unrar autoconf automake libtool gcc g++ gperf \
     flex bison texinfo gawk ncurses-dev libexpat-dev python-dev python python-serial \
-    sed git unzip bash help2man
+    sed git unzip bash help2man wget bzip2
 ```
 
 Later Debian/Ubuntu versions may require: