Add virtualenv support to `.pylintrc`
Add virtualenv support to `.pylintrc`

Include the current active virtualenv into pylint's init-hook.
The `base64` encoded string is:
```python
import sys, os

if 'VIRTUAL_ENV' not in os.environ:
    sys.exit(0)

ve_dir = os.environ['VIRTUAL_ENV']
ve_dir in sys.path or sys.path.insert(0, ve_dir)
activate_this = os.path.join(os.path.join(ve_dir, 'bin'), 'activate_this.py')

if not os.path.exists(activate_this):
    activate_this = os.path.join(os.path.join(ve_dir, 'Scripts'), 'activate_this.py')

execfile(activate_this, dict(__file__=activate_this))
```

saltstack/salt,saltstack/salt,saltstack/salt,saltstack/salt,saltstack/salt