fix broken build (#221)

Author: villebro

MANIFEST.in

@@ -1,5 +1,6 @@
 include *.txt
 include *.md
-recursive-include docs
-recursive-include pydruid
+recursive-include docs *.txt
+recursive-include pydruid *.py
+global-exclude *.py[co]
 include LICENSE

setup.py

@@ -19,8 +19,7 @@
     version="0.999.0dev",
     author="Druid Developers",
     author_email="[email protected]",
-    packages=find_packages("pydruid"),
-    package_dir={"": "pydruid"},
+    packages=find_packages(),
     url="https://druid.apache.org",
     project_urls={
         "Bug Tracker": "https://github.com/druid-io/pydruid/issues",