fix: no package import needed for console_scripts!

Surprise! I didn't know how this worked. Turns out you don't need to 
import the whole package anyway. derp derp

setup.py

@@ -2,7 +2,6 @@
 from setuptools import setup, find_packages
 
 from pyDeltaRCM import shared_tools
-from pyDeltaRCM import command_line
 
 setup(name='pyDeltaRCM',
       version=shared_tools._get_version(),
@@ -16,6 +15,6 @@
       install_requires=['matplotlib', 'netCDF4',
                         'basic-modeling-interface', 'scipy', 'numpy', 'pyyaml'],
       entry_points={
-                  'console_scripts': ['run_pyDeltaRCM=command_line:run_model'],
+                  'console_scripts': ['run_pyDeltaRCM=pyDeltaRCM.command_line:run_model'],
       }
       )