Changes for v1.0.0 release (#345)

* Move spotdl.py inside spotdl directory

* Fix Dockerfile

* Re-upload FFmpeg binary

* Small fixes ;)

.travis.yml

@@ -35,7 +35,7 @@ addons:
       - libav-tools
 install:
   - pip install -e .
-  - tinydownload 22684734659253158385 -o ~/bin/ffmpeg
+  - tinydownload 07426048687547254773 -o ~/bin/ffmpeg
   - chmod 755 ~/bin/ffmpeg
   - xdg-user-dirs-update
 script: python -m pytest test --cov=.