Update LICENSE.txt

Author: BruceSherwood

LICENSE.txt

@@ -35,6 +35,7 @@ in the file transform-all.js, based on the work of
 Supporting the VPython API in a browser is possible thanks to the work of
     Alexander Tsepkov (RapydScript: https://bitbucket.org/pyjeon/rapydscript) and
     Charles Law (browser-based RapydScript: http://pyjeon.pythonanywhere.com/static/rapydscript_online/index.html).
+    Kovid Goyal (RapdScript-NG) RapydScript-NG: https://github.com/kovidgoyal/rapydscript-ng
 
 When the GlowScript project was launched in 2011 by David Scherer and Bruce Sherwood,
 Scherer implemented operator overloading and synchronous code using libraries existing at that time.
@@ -46,3 +47,29 @@ For explanation of poly2tri, see http://sites-final.uclouvain.be/mema/Poly2Tri
 Font manipulation: https://github.com/nodebox/opentype.js
 Public-domain sans serif font Roboto-Medium.ttf from http://www.1001freefonts.com/roboto.font
 Public-domain serif font NimbusRomNo9L-Med.otf from http://www.1001fonts.com/nimbus-roman-no9-l-font.html
+
+Information about RapydScript and RapydScript-NG:
+Copyright (c) 2015-, Kovid Goyal <[email protected]>
+Copyright (c) 2013-2014, Alexander Tsepkov <[email protected]>
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright notice, this
+  list of conditions and the following disclaimer.
+
+* Redistributions in binary form must reproduce the above copyright notice,
+  this list of conditions and the following disclaimer in the documentation
+  and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.