fix name, add license, write readme

cmd/print_ast.go

@@ -1,11 +1,28 @@
+/*   SHS: Syntactically Homogeneous Shell
+ *   Copyright (C) 2019  Aidan Hahn
+ *
+ *   This program is free software: you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation, either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package main
 
 import (
     "strings"
     "os"
-    "git.callpipe.com/aidan/shsh"
+    "git.callpipe.com/aidan/shs"
 )
 
 func main() {
-    shsh.PrintSExpression(shsh.Lex(strings.Join(os.Args[1:], " ")))
+    shs.PrintSExpression(shs.Lex(strings.Join(os.Args[1:], " ")))
 }