Update gitignore, add requirements to README, rework bob and build

.gitignore

@@ -1,2 +1,3 @@
 TAGS
 bin/
+/system-index.txt

README.txt

@@ -16,3 +16,11 @@ Goals:
 - Games may have up to 12 players
 - Games may include bots
 - Bots have different ranks of difficulty
+
+Requirements:
+- Steele Bank Common Lisp (http://www.sbcl.org/)
+- Quick Lisp (https://www.quicklisp.org/beta/)
+
+Run:
+    $ ./build
+to compile the program.

bob.lisp

@@ -13,11 +13,12 @@
 
 ;;; Commentary:
 
-;; Little bit of code scaffolding that makes it easy to load or build the
-;; system.  Named after "Bob the Builder".
+;; Code scaffolding to make loading/building the system easy.  Named after "Bob
+;; the Builder".
 
 ;;; Code:
 
+;; Try and push the current directory into the quicklisp project directories.
 (pushnew (truename (uiop:getcwd))
          ql:*local-project-directories*)
 
@@ -27,9 +28,13 @@
 
 (in-package :bob)
 
+(defun init ()
+  (ql:quickload :cantedraw))
+
 (defun load-all ()
-  (ql:quickload :cantedraw :verbose t))
+  (init)
+  (asdf:load-system :cantedraw))
 
 (defun build ()
-  (load-all)
+  (init)
   (asdf:make :cantedraw))

build

@@ -2,6 +2,7 @@
 
 set -xe
 
+rm -f ./bin/cantedraw
 sbcl --non-interactive \
      --load "./bob.lisp" \
      --eval "(bob:build)"