add new README for binaries

bin/README.md

@@ -0,0 +1,18 @@
+# Binaries for running ArchiveBox
+
+This folder contains all the executables that ArchiveBox provides.
+
+
+# Adding it to your `$PATH`
+To be able to run ArchiveBox from anywhere on your system, you can add this entire folder to your path, like so:
+
+**Edit `~/.bash_profile`:**
+```bash
+export PATH=/opt/ArchiveBox/bin:$PATH
+```
+
+# Running executables directly
+
+If you don't want to add ArchiveBox to your `$PATH` you can also call these executables directly with their full path, like so:
+
+`/opt/ArchiveBox/bin/ArchiveBox https://example.com/some/feed.rss`