missing package init files

[DmitrySandalov]

tvcmd installs incorrectly with setup.py

Steps:

1. mkvirtualenv -p python3 tvcmd
2. git clone https://github.com/juantascon/tvcmd/; cd tvcmd
3. ./setup.py install > /dev/null

package init file 'tvcmd/lib/__init__.py' not found (or not a regular file)
package init file 'tvcmd/sources/__init__.py' not found (or not a regular file)
zip_safe flag not set; analyzing archive contents...

When I try to launch tvcmd after such install:

Traceback (most recent call last):
  File "/home/user/.virtualenvs/tvcmd/bin/tvcmd", line 4, in <module>
    __import__('pkg_resources').run_script('tvcmd==1.2.1', 'tvcmd')
  File "/home/user/.virtualenvs/tvcmd/lib/python3.5/site-packages/pkg_resources/__init__.py", line 742, in run_script
    self.require(requires)[0].run_script(script_name, ns)
  File "/home/user/.virtualenvs/tvcmd/lib/python3.5/site-packages/pkg_resources/__init__.py", line 1504, in run_script
    exec(script_code, namespace, namespace)
  File "/home/user/.virtualenvs/tvcmd/lib/python3.5/site-packages/tvcmd-1.2.1-py3.5.egg/EGG-INFO/scripts/tvcmd", line 72, in <module>
  File "/home/user/.virtualenvs/tvcmd/lib/python3.5/site-packages/tvcmd-1.2.1-py3.5.egg/EGG-INFO/scripts/tvcmd", line 28, in main
  File "/home/user/.virtualenvs/tvcmd/lib/python3.5/site-packages/tvcmd-1.2.1-py3.5.egg/tvcmd/shell.py", line 2, in <module>
  File "/home/user/.virtualenvs/tvcmd/lib/python3.5/site-packages/tvcmd-1.2.1-py3.5.egg/tvcmd/commands.py", line 2, in <module>
  File "/home/user/.virtualenvs/tvcmd/lib/python3.5/site-packages/tvcmd-1.2.1-py3.5.egg/tvcmd/manager.py", line 2, in <module>
ImportError: No module named 'tvcmd.sources'

When I create the blank missing files

touch tvcmd/lib/__init__.py
touch tvcmd/sources/__init__.py

and launch ./setup.py install again, tvcmd is working properly.

[DmitrySandalov]

BTW install with pip is working fine:
pip install https://github.com/juantascon/tvcmd/archive/master.zip

It would be good to add install instructions to README.md