doc: update README

README.md

@@ -1,3 +1,30 @@
+# What is it?
+
+This program takes the very last video published on a PeerTube instance and pushes it to a corresponding YouTube channel.
+
+# What the status of this?
+
+This is an early prototype not really suited for production purposes for now:
+* it still relies way too much on pre-determined value to upload the video to YouTube
+* it cannot determine the playlists it needs to put them in
+* it cannot determine the recording date (believe me, I tried!)
+* there are still a lot of static values that I would rather not have static (like the cache directory…)
+* it is 100% sync, meaning it’s clearly not optimal for now and probably won’t be for the next releases
+
+So consider this a work in progress that will slowly get better with time
+
+# What does it do exactly?
+
+* it downloads the latest PeerTube video from an instance
+* stores it in cache directory
+* uploads it to YouTube
+
+# What doesn’t it do exactly?
+
+* it cannot register the original key (see below)
+* it relies on a local cache despite the fact that it might well be possible to just download from PT/upload to YT at the same time (I don’t see why not in fact)
+* it doesn’t retrieve ALL the original PeerTube video properties like licences, languages, categories, etc… again: early prototype
+
 # Obtain Authorization Token from Google
 
 That the complicated part: