more installation instructions; fix link to nose

Author: Shoshana Berleant

doc/links_names.txt

@@ -56,7 +56,7 @@
 .. _doctest-mode: http://www.cis.upenn.edu/~edloper/projects/doctestmode/
 .. _bazaar: http://bazaar-vcs.org/
 .. _subversion: http://subversion.tigris.org/
-.. _nose: http://somethingaboutorange.com/mrl/projects/nose
+.. _nose: http://nose.readthedocs.io/en/latest/
 .. _`python coverage tester`: http://nedbatchelder.com/code/modules/coverage.html
 
 .. Other python projects

doc/users/install.rst

@@ -62,6 +62,8 @@ If you downloaded the source distribution named something
 like ``nipype-x.y.tar.gz``, then unpack the tarball, change into the
 ``nipype-x.y`` directory and install nipype using::
 
+    easy_install nibabel
+    pip install -r requirements.txt
     python setup.py install
 
 **Note:** Depending on permissions you may need to use ``sudo``.
@@ -111,10 +113,15 @@ recommendations.
 Must Have
 ~~~~~~~~~
 
-Python_ 2.7
-
 Nibabel_ 1.0 - 1.4
-  Neuroimaging file i/o library
+  Neuroimaging file i/o library.
+
+.. note::
+
+    Full distributions of Nipype, such as the ones in  Anaconda_ or Canopy_, provide
+    the following packages automatically.
+
+Python_ 2.7
 
 NetworkX_ 1.0 - 1.8
   Python package for working with complex networks.
@@ -128,10 +135,6 @@ Enthought_ Traits_ 4.0.0 - 4.3.0
 
 Dateutil 1.5 -
 
-.. note::
-
-    Full distributions such as Anaconda_ or Canopy_ provide the above packages,
-    except Nibabel_.
 
 Strong Recommendations
 ~~~~~~~~~~~~~~~~~~~~~~
@@ -144,18 +147,22 @@ Matplotlib_ 1.0 - 1.2
   Plotting library
 
 `RDFLib <http://rdflib.readthedocs.org/en/latest/>`_ 4.1
-RDFLibrary required for provenance export as RDF
+  RDFLibrary required for provenance export as RDF
 
 Sphinx_ 1.1
   Required for building the documentation
 
 `Graphviz <http://www.graphviz.org/>`_
-  Required for building the documentation
+  Required for building the documentation. The python wrapper package (``graphviz``)
+  and the program itself both need to be installed.
 
 Interface Dependencies
 ~~~~~~~~~~~~~~~~~~~~~~
 
-These are the software packages that nipype.interfaces wraps:
+You might not need some of the following packages, depending on what exactly you
+want to use nipype for. If you do need any of them, install nipype's wrapper package
+(``nipype.interfaces``), then install the programs separately onto your computer, just
+like you would install any other app.
 
 FSL_
   4.1.0 or later