Make tests run on Windows (fixes #137)

Use AppVeyor to run tests

config/config.example.yml

@@ -7,10 +7,10 @@ python: /usr/bin/python
 
 # An array of parameters to pass to youtube-dl
 params:
-    - --no-playlist
     - --no-warnings
-    - --playlist-end
-    - 1
+    - --ignore-errors
+    - --flat-playlist
+    - --restrict-filenames
 
 # True to enable audio conversion
 convert: false

config/config_test_windows.yml

@@ -0,0 +1,12 @@
+---
+convert: false
+python: C:\Python36\python.exe
+avconv: C:\ProgramData\chocolatey\bin\ffmpeg.exe
+rtmpdump: C:\ProgramData\chocolatey\bin\rtmpdump
+youtubedl: C:\Python36\Lib\site-packages\youtube_dl\__main__.py
+params:
+    - --no-warnings
+    - --ignore-errors
+    - --flat-playlist
+    - --restrict-filenames
+    - --no-check-certificate