[api version bump] Update API documentation in the example scripts

Give better examples, and rewrite options parsing to be more consistent across examples.
Make it more obvious that you can use "--user" and "--api-key" with our python examples.

This bumps our python bindings to v0.1.9

(imported from commit 297468088f864b7d585e567dc45523ea681f1856)

examples/curl-examples

@@ -2,13 +2,13 @@
 # Two quick API tests using curl
 
 curl https://humbughq.com/api/v1/send_message \
-    -d "api-key=YOUR_API_KEY" \
-    -d "email=YOUR_EMAIL" \
+    -d "api-key=BOT_API_KEY" \
+    -d "email=BOT_EMAIL" \
     -d "type=private" -d "content=test" \
     -d "to=RECIPIENT_EMAIL"
 
 curl https://humbughq.com/api/v1/get_messages \
-    -d "api-key=YOUR_API_KEY" \
-    -d "email=YOUR_EMAIL"
+    -d "api-key=BOT_API_KEY" \
+    -d "email=BOT_EMAIL"
 
 # Or replace https://humbughq.com with your local test instance