Add Streamable to download factory

bdfr/site_downloaders/download_factory.py

@@ -16,6 +16,7 @@ from bdfr.site_downloaders.redgifs import Redgifs
 from bdfr.site_downloaders.self_post import SelfPost
 from bdfr.site_downloaders.vreddit import VReddit
 from bdfr.site_downloaders.youtube import Youtube
+from bdfr.site_downloaders.streamable import Streamable
 
 
 class DownloadFactory:
@@ -42,10 +43,13 @@ class DownloadFactory:
             return VReddit
         elif re.match(r'(m\.)?youtu\.?be', sanitised_url):
             return Youtube
+        elif re.match(r'streamable\.com', sanitised_url):
+            return Streamable
         elif re.match(r'i\.redd\.it.*', sanitised_url):
             return Direct
         else:
-            raise NotADownloadableLinkError(f'No downloader module exists for url {url}')
+            raise NotADownloadableLinkError(
+                f'No downloader module exists for url {url}')
 
     @staticmethod
     def _sanitise_url(url: str) -> str: