bootstrap theme is required for building the help page

Author: josenavas

setup.py

@@ -91,13 +91,14 @@
                         ]},
       scripts=glob('scripts/*'),
       extras_require={'test': ["nose >= 0.10.1", "pep8", 'mock'],
-                      'doc': ["Sphinx >= 1.2.2", "sphinx-bootstrap-theme"]},
+                      'doc': ["Sphinx >= 1.2.2"]},
       install_requires=['psycopg2', 'click >= 3.3', 'future==0.13.0',
                         'bcrypt', 'pandas >= 0.15', 'numpy >= 1.7',
                         'tornado==3.1.1', 'toredis', 'redis',
                         'ipython[all] >= 2.4.1, < 2.5', 'pyparsing',
                         'h5py >= 2.3.1', 'biom-format', 'natsort', 'networkx',
                         'scikit-bio >= 0.2.3, < 0.3.0', 'wtforms == 2.0.1',
-                        'qiime >= 1.9.0, < 1.10.0', 'moi >= 0.2.0, < 0.3.0'],
+                        'qiime >= 1.9.0, < 1.10.0', 'moi >= 0.2.0, < 0.3.0',
+                        'sphinx-bootstrap-theme'],
       classifiers=classifiers
       )