Include changelog and licenses in generated docs

We may want to use .rst formatting for these eventually, and maybe move
the NEWS file to docs/News.rst and docs/History.rst - but for now
including the raw text works well enough.

README.rst

@@ -28,7 +28,7 @@ DFHack documentation is generated by Sphinx.  Check out the table of contents
 below, or the sources in the docs folder!
 
 
-Contents for users:
+User Manual:
 
 .. toctree::
    :maxdepth: 2
@@ -37,7 +37,16 @@ Contents for users:
    docs/Plugins
    docs/Scripts
 
-Contents for developers:
+Other Contents:
+
+.. toctree::
+   :maxdepth: 1
+
+   docs/Authors
+   docs/Licenses
+   docs/Changelog
+
+For Developers:
 
 .. toctree::
    :maxdepth: 1
@@ -45,4 +54,3 @@ Contents for developers:
    docs/Contributing
    docs/Compile
    docs/Lua API
-   docs/Authors

docs/Changelog.rst

@@ -0,0 +1,6 @@
+#########
+Changelog
+#########
+
+.. include:: ../NEWS
+   :literal:

docs/Licenses.rst

@@ -0,0 +1,10 @@
+########
+Licenses
+########
+
+DFHack is distributed under a range of permissive and weakly copyleft licenses.
+
+The core uses the ZLib license; the others are described below.
+
+.. include:: ../LICENSE
+   :literal: