Fix syntax error in setup.py (#83)

Author: sethblack

setup.py

@@ -10,7 +10,7 @@
 
 setup(
     name='pyseoanalyzer',
-    version='4.0.5',
+    version='4.0.6',
     description='An SEO tool that analyzes the structure of a site, crawls the site, count words in the body of the site and warns of any technical SEO issues.',
     author='Seth Black',
     author_email='sblack@sethserver.com',
@@ -20,7 +20,7 @@
     package_data={'seoanalyzer': ['templates/index.html',]},
     include_package_data=True,
     install_requires=[
-        'BeautifulSoup4', 'requests', 'jinja2', 'urllib3', 'certifi',
+        'BeautifulSoup4', 'lxml', 'requests', 'jinja2', 'urllib3', 'certifi',
     ],
     entry_points={
         'console_scripts' : [