Rewrite, edit and organize examples/rest demos.

examples/rest/public/pulse_endpoints.py

@@ -0,0 +1,24 @@
+# python -c "import examples.rest.public.pulse_endpoints"
+
+import datetime
+
+from bfxapi import Client, PUB_REST_HOST
+
+from bfxapi.rest.types import List, PulseMessage, PulseProfile
+
+bfx = Client(REST_HOST=PUB_REST_HOST)
+
+# POSIX timestamp in milliseconds (check https://currentmillis.com/)
+end = datetime.datetime(2020, 5, 2).timestamp() * 1000 
+
+# Retrieves 25 pulse messages up to 2020/05/02
+messages: List[PulseMessage] = bfx.rest.public.get_pulse_history(end=end, limit=25)
+
+for message in messages:
+    print(f"Message author: {message.profile.nickname} ({message.profile.puid})")
+    print(f"Title: <{message.title}>")
+    print(f"Tags: {message.tags}\n")
+
+profile: PulseProfile = bfx.rest.public.get_pulse_profile("News")
+URL = profile.picture.replace("size", "small")
+print(f"<{profile.nickname}>'s profile picture: https://s3-eu-west-1.amazonaws.com/bfx-pub/{URL}")