make sure compile_commands.json doesn't end up in the repo

.gitignore

@@ -1,2 +1,3 @@
 *.o
 XD
+compile_commands.json

XD.c

@@ -291,7 +291,7 @@ main(int argc, char *argv[])
 
     /* change the nose depending on the current git repo's status */
     if (has_staged(repo)) {
-      E("The're staged changes.")
+      E("They're staged changes.")
       P("*"); /* change to broken nose for staged changes */
     } else if (has_untracked(repo)) {
       E("There are untracked changes in the repository.")