Remarks on configuration in the README.

README.md

@@ -12,6 +12,14 @@ program. It's written in Go using the [Bubble Tea][tea] library, and uses
 [tea]: https://github.com/charmbracelet/bubbletea
 [coin]: https://www.coindesk.com
 
+### Configuration
+
+By default, the program will use Bitcoin along with various goals and bases
+of comparison. With the `--config-file` flag, however, one can specify a TOML
+file that overrides these defaults.
+
+See [this one for Ethereum](./config/eth.toml) for an example.
+
 ### "Theory"
 
 Given a pair of quotes taken at the start and end of some period,
@@ -39,8 +47,7 @@ $$ x = {{log(p_f) - log(p_e)} \over log(r)} $$
 
 ### Future Improvements
 
-* Support other assets available from Coindesk.
-* Configurable projection milestones.
+* Add more default configurations for various assets.
 * Allow projection by date, e.g. use the CDPR to calculate what the price
   would be on a particular date.
 * Log errors to a file.