image: correct declaration + usage

- Declaration: setup.py declares the image a 'hackertray' data, gives
  its location and asks its inclusion
- appindicator looks for the picture in folders near itself, instead of
  /usr/bin (near the main executable) or the first entry of path.

hackertray/appindicator_replacement.py

@@ -25,8 +25,8 @@ STATUS_ATTENTION = 1
 
 # Locations to search for the given icon
 search_locations = [ os.path.join(os.path.dirname(sys.executable), "images"),
-                     os.path.join(os.path.dirname(sys.path[0]), "images"),
-                     os.path.join(os.path.dirname(sys.path[0]), "../images"),
+                     os.path.join(os.path.dirname(__file__), "images"),
+                     os.path.join(os.path.dirname(__file__), "../images"),
                      '/usr/share/pixmaps' ]
 
 def get_icon_filename(icon_name):

setup.py

@@ -8,6 +8,8 @@ setup(name='hackertray',
       author_email='me@captnemo.in',
       license='MIT',
       packages=['hackertray'],
+      package_data={'hackertray': ['../images/hacker-tray.png']},
+      include_package_data=True,
       install_requires=[
           'requests',
       ],