Added verset

After dealing with autoconf, I may decide not to implement it. The build process
is fairly simple as it is and I do not want to over-complicate it. verset solves
one of the issues that autconf would have aided in addressing - setting a
version number.

tools/verset

@@ -0,0 +1,27 @@
+#!/bin/bash
+#
+# Simple version update script
+##
+
+major="$1"
+minor="$2"
+rev="$3"
+suffix="$4"
+
+# pre-formatted suffix
+fsuffix=
+[ -n "$suffix" ] && fsuffix="-$suffix"
+
+# generate version.js
+cat version.js.tpl | sed "
+  s/@MAJOR@/$major/;
+  s/@MINOR@/$minor/;
+  s/@REV@/$rev/;
+  s/@SUFFIX@/$suffix/;
+" > ../lib/version.js
+
+# output version for docs
+cat - > ../doc/version.texi <<EOF
+@c DO NOT MODIFY; generated by verset (not autoconf)
+@set VERSION $major.$minor.$rev$fsuffix
+EOF

tools/version.js.tpl

@@ -0,0 +1,45 @@
+/**
+ * Provides version information
+ *
+ *  Copyright (C) 2010,2011 Mike Gerwitz
+ *
+ *  This file is part of ease.js.
+ *
+ *  ease.js is free software: you can redistribute it and/or modify it under the
+ *  terms of the GNU Lesser 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 Lesser General Public License
+ *  for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * @author  Mike Gerwitz
+ */
+
+/*** DO NOT MODIFY; generated by verset ***/
+
+var major  = @MAJOR@,
+    minor  = @MINOR@,
+    rev    = @REV@,
+    suffix = '@SUFFIX@',
+
+    version = [ major, minor, rev, suffix ];
+
+version.major  = major;
+version.minor  = minor;
+version.rev    = rev;
+version.suffix = suffix;
+
+version.toString = function()
+{
+    return this.join( '.' )
+        .replace( /\.([^.]+)$/, '-$1' )
+        .replace( /-$/, '' );
+};
+
+module.exports = version;