Update .gitignore and Makefile

Minor fixes:
* Ignore .latest_version in the root directory actually.
* Make a new zimfw.zsh also when the LICENSE changes.

.gitignore

@@ -2,7 +2,7 @@
 *.zwc
 *.zwc.old
 /modules/
-.latest_version
+/.latest_version
 /init.zsh
 /init.zsh.old
 /login_init.zsh

Makefile

@@ -1,4 +1,4 @@
-srcfiles := src/zimfw.zsh.erb $(wildcard src/*/*.erb)
+srcfiles := src/zimfw.zsh.erb $(wildcard src/*/*.erb) LICENSE
 
 zimfw.zsh: $(srcfiles)
 	erb $< >| $@