added license information

LICENSE.md

@@ -20,3 +20,62 @@ The ColorSchemes package is licensed under the MIT "Expat" License:
 > 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.
+
+## matplotlib license
+
+New matplotlib colormaps by Nathaniel J. Smith, Stefan van der Walt,
+and (in the case of viridis) Eric Firing.
+
+This file and the colormaps in it are released under the CC0 license /
+public domain dedication. We would appreciate credit if you use or
+redistribute these colormaps, but do not impose any legal restrictions.
+
+To the extent possible under law, the persons who associated CC0 with
+mpl-colormaps have waived all copyright and related or neighboring rights
+to mpl-colormaps.
+
+## colorbrew license
+
+You should have received a copy of the CC0 legalcode along with this
+work.  If not, see <http://creativecommons.org/publicdomain/zero/1.0/>.
+
+Apache-Style Software License for ColorBrewer software and ColorBrewer Color Schemes
+
+Copyright (c) 2002 Cynthia Brewer, Mark Harrower, and The Pennsylvania State University.
+
+Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software distributed
+under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
+CONDITIONS OF ANY KIND, either express or implied. See the License for the
+specific language governing permissions and limitations under the License.
+
+## cmocean license
+
+The MIT License (MIT)
+
+Copyright (c) 2015 Kristen M. Thyng
+
+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, and to permit persons to whom the Software is
+furnished to do so, 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.
+
+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. 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.
+
+see https://github.com/matplotlib/cmocean

README.md

@@ -5,7 +5,6 @@
 
 ## ColorSchemes
 
-
 This package provides a collection of colorschemes and colormaps:
 
 - scientifically devised colorschemes from ColorBrewer and CMOcean
@@ -14,3 +13,5 @@ This package provides a collection of colorschemes and colormaps:
 - variously themed colorschemes such as _sunset_, _coffee_, _neon_, and _pearl_
 
 *The package is designed for general purpose and informal graphics work. For high quality color maps that have consistent perceptual contrast over their full range, refer to Peter Kovesi's [PerceptualColourMaps](https://github.com/peterkovesi/PerceptualColourMaps.jl) package.*
+
+Some tools for working with colorschemes can be found in the ColorSchemeTools.jl package.