Fixes #257 by removing the docutils dependency

The docutils is only needed for Selenium2Library development,
therefore removed the dependency from setup.py. Also added meaningfull
error message to development tools, if the docutils is not installed.

Author: aaltat

doc/buildhtml.py

@@ -26,13 +26,16 @@
 import os.path
 import copy
 from fnmatch import fnmatch
-import docutils
-from docutils import ApplicationError
-from docutils import core, frontend, utils
-from docutils.error_reporting import ErrorOutput, ErrorString
-from docutils.parsers import rst
-from docutils.readers import standalone, pep
-from docutils.writers import html4css1, pep_html
+try:
+    import docutils
+    from docutils import ApplicationError
+    from docutils import core, frontend, utils
+    from docutils.error_reporting import ErrorOutput, ErrorString
+    from docutils.parsers import rst
+    from docutils.readers import standalone, pep
+    from docutils.writers import html4css1, pep_html
+except ImportError:
+  raise ImportError('Importing `docutils` failed. Install it with `pip install docutils`.')
 
 
 usage = '%prog [options] [<directory> ...]'

setup.py

@@ -35,8 +35,7 @@
       install_requires = [
 							'decorator >= 3.3.2',
 							'selenium >= 2.32.0',
-							'robotframework >= 2.6.0',
-							'docutils >= 0.8.1'
+							'robotframework >= 2.6.0'
 						 ],
       py_modules=['ez_setup'],
       package_dir  = {'' : 'src'},