changed shebangs end function snippet

Same pull request as before, but could not resolve rebasing problem.

snippets/sh.snippets

@@ -1,5 +1,8 @@
 # Shebang. Executing bash via /usr/bin/env makes scripts more portable.
 snippet #!
+	#!/usr/bin/env sh
+	
+snippet bash
 	#!/usr/bin/env bash
 
 snippet if
@@ -79,11 +82,13 @@ snippet getopt
 	shift $(($OPTIND-1))
 snippet root
 	if [ \$(id -u) -ne 0 ]; then exec sudo \$0; fi
-snippet fun
+
+snippet fun-sh
 	${1:function_name}() {
 		${0:#function_body}
 	}
-snippet ffun
+
+snippet fun
 	function ${1:function_name}() {
 		${0:#function_body}
 	}