Refactor project README.md structure and Sphinx documentation

Adds authors and addresses to setup.py, points key_function in indecontent.html to key_functions.

Closes #36. References and closes #35, #20

docs/_templates/indexcontent.html

@@ -35,7 +35,7 @@
     </td><td width="50%">
       <p class="biglink"><a class="biglink" href="{{ pathto("search") }}">Search page</a><br/>
          <span class="linkdescr">Search the documentation</span></p>
-      <p class="biglink"><a class="biglink" href="{{ pathto("api") }}">Key Functions</a><br/>
+      <p class="biglink"><a class="biglink" href="{{ pathto("key_functions") }}">Key Functions</a><br/>
          <span class="linkdescr">List of important functions</span></p>
     </td></tr>
   </table>

setup.py

@@ -47,8 +47,8 @@
       version=__release__,
       description='BASIN-3D Core Framework',
       long_description=README,
-      author='Val Hendrix, <list all authors>',
-      author_email='vchendrix@lbl.gov, <list all author emails>',
+      author='Val Hendrix, Danielle Svehla Christianson, Charuleka Varadharajan, Catherine Wong',
+      author_email='vchendrix@lbl.gov, dschristianson@lbl.gov, cvaradharajan@lbl.gov, catwong@lbl.gov' ,
       url='https://github.com/BASIN-3D/basin3d',
       packages=packages,
       data_files=['basin3d/data/basin3d_variables_hydrology.csv',