Update dist license for new libraries

LICENSE-dist.txt

@@ -193,13 +193,13 @@ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLI
 IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 
-# portmidi
+# RtMidi
 
-Copyright (c) 1999-2000 Ross Bencina and Phil Burk
-Copyright (c) 2001-2009 Roger B. Dannenberg
+RtMidi: realtime MIDI i/o C++ classes
+Copyright (c) 2003-2017 Gary P. Scavone
 
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files
+Permission is hereby granted, free of charge, to any person
+obtaining a copy of this software and associated documentation files
 (the "Software"), to deal in the Software without restriction,
 including without limitation the rights to use, copy, modify, merge,
 publish, distribute, sublicense, and/or sell copies of the Software,
@@ -209,6 +209,9 @@ subject to the following conditions:
 The above copyright notice and this permission notice shall be
 included in all copies or substantial portions of the Software.
 
+Any person wishing to distribute modifications to the Software is asked to send the modifications to the original developer so that they can be incorporated into the canonical version.  This is,
+however, not a binding provision of this license.
+
 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.