add screenshot

README.md

@@ -1,6 +1,8 @@
 # bink
 
-serverless microblogging for tilde.town
+serverless microblogging for tilde.town!
+
+![screenshot](/screenshot.png)
 
 ## command usage
 

bink.py

@@ -3,7 +3,7 @@ from glob import glob
 from time import time_ns
 import datetime
 import os
-from sys import argv
+import sys
 from subprocess import run
 import tempfile
 from math import floor
@@ -11,6 +11,11 @@ from math import floor
 home = os.path.expanduser("~/.bink")
 max_body_length = 64_000
 
+helptext = """see https://git.tilde.town/nebula/bink for details
+--help: show this message
+--pipe: user stdin as post content. ex `echo "hello!" | bink.py --pipe`
+--dump: print all posts in a json object"""
+
 try:
     os.mkdir(home)
 except FileExistsError:
@@ -50,14 +55,14 @@ def generate_feed(before=None, count=200):
         blogs.append(obj)
     return blogs
 
-if len(argv) > 1:
-    if argv[1] == "--help":
-        exit("see https://git.tilde.town/nebula/bink for usage instructions")
-    elif argv[1] == "--dump":
+if len(sys.argv) > 1:
+    if sys.argv[1] == "--help":
+        exit(helptext)
+    elif sys.argv[1] == "--dump":
         with open("/dev/stdout", "w") as f:
             json.dump(generate_feed(), f)
         exit()
-    elif argv[1] == "--pipe":
+    elif sys.argv[1] == "--pipe":
         try:
             with open("/dev/stdin", "r", encoding="UTF-8") as f:
                 body = f.read().strip()
@@ -67,7 +72,7 @@ if len(argv) > 1:
         except KeyboardInterrupt:
             exit()
     else:
-        create_post(" ".join(argv[1:]))
+        create_post(" ".join(sys.argv[1:]))
         exit()
 
 import urwid
@@ -99,8 +104,8 @@ class App():
             self.walker.append(self.post_to_widget(post))
 
     def post_to_widget(self, post):
-        time = post["time"] / 1_000_000_000
-        stamp = datetime.datetime.fromtimestamp(time)
+        time_seconds = post["time"] / 1_000_000_000
+        stamp = datetime.datetime.fromtimestamp(time_seconds)
         pile = urwid.Pile([
             urwid.Text([("bold", f"~{post['user']}"), " @ ", stamp.strftime("%H:%M (%A, %B %d, %Y)")]),
             urwid.Text(post['body']),