provide license for redistributed software

Author: flavorjones

Diff for: LICENSE-DEPENDENCIES

@@ -0,0 +1,26 @@
+tailwindcss-rails may redistribute executables from the https://github.com/tailwindlabs/tailwindcss project
+
+The license for that software can be found at https://github.com/tailwindlabs/tailwindcss/blob/master/LICENSE which is reproduced here for your convenience:
+
+    MIT License
+    
+    Copyright (c) Adam Wathan <[email protected]>
+    Copyright (c) Jonathan Reinink <[email protected]>
+    
+    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.

Diff for: rakelib/package.rake

@@ -87,7 +87,7 @@ TAILWINDCSS_NATIVE_PLATFORMS.each do |platform, filename|
     # modify a copy of the gemspec to include the native executable
     gemspec.platform = platform
     gemspec.executables << "tailwindcss"
-    gemspec.files << exepath
+    gemspec.files += [exepath, "LICENSE-DEPENDENCIES"]
 
     # create a package task
     gem_path = Gem::PackageTask.new(gemspec).define