Fix how package data was included

Author: pjt0620

setup.py

@@ -31,7 +31,7 @@
     ],
     url='http://github.com/openxc/openxc-python',
     packages=find_packages(exclude=["tests", "tests.*"]),
-    package_data={'openxc': ['generator/signals.cpp*'], 'openxc': ['tools/templates/dashboard.html*']},
+    package_data={'openxc': ['generator/signals.cpp*', 'tools/templates/dashboard.html*']},
     test_suite='nose.collector',
     tests_require=['nose'],
     install_requires=install_reqs,