Update README.md

README.md

@@ -4,24 +4,41 @@ please see the [relevant Wikipedia article][1].
 
 [1]: https://en.wikipedia.org/wiki/Truth_table 
 
-To build, just run `make`. You will need SBCL, ASDF, and Quicklisp. Quicklisp is
-used to load `uiop` and `with-user-abort`.
+There is an instance of the web version of this program hosted here: [tt.zander.im][2]
+
+[2]: https://tt.zander.im/
+
+This repository contains three things: a Common Lisp library to parse and
+manipulate propositional logic expressions, a command line truth table
+generator, and a web-based truth table generator.
+
+To build the CLI version, just run `make`. You will need SBCL, ASDF, and
+Quicklisp. Quicklisp is used to load `uiop` and `with-user-abort`.
+
+To run the web server, execute `./truth-table-web-wrapper`. If you want to run
+it in the background, I recommend using something like GNU Screen. The web
+server supports `-h` and `--help`, you can use them to see all the options it
+supports. It should be noted, however, that it does not support HTTPS. If you
+want to use HTTPS, run the web server behind something like Nginx or HAProxy.
 
 The format of the input propositions is fairly free-form. The above Wikipedia
 article has some information about their format, as well as possible symbols for
-operators. You can also take a look at the table near the top of
-`parse.lisp` for all the variations supported by this program.
+operators. You can also take a look at the table near the top of `parse.lisp`
+for all the variations supported by this program.
 
-Here is the help output from the program:
+### CLI Usage
+Here is the help output from the CLI (not web) program:
 ```text
 usage: truth-table [options] <propositions...>
 
   -h, --help          print this message, then exit
-  -f, --format=<arg>  specify the output format (*unicode*, ascii, or latex)
+  -f, --format=<arg>  specify the output format (*unicode*, ascii, latex, or html)
   -s, --subexps       include sub-expressions in the output table
   -n, --no-vars       do not include variables in the output table
   -m, --multi-char    allow multi-character variable names
   -i, --no-implicit   do not use implicit 'and' operations
+  -p, --pretty        pretty print latex, html, etc. output
+  -l, --latin         use the Latin T and F characters for truth values
 
 The choice surrounded by '*' is the default. Arguments to long
 options are also required for their short variant.
@@ -30,7 +47,6 @@ options are also required for their short variant.
 Here is an example truth table:
 ```text
 $ truth-table '(a /\ b) -> ~b'
-
 ┌───┬───┬────────────┐
 │ a │ b │ a ∧ b → ¬b │
 ├───┼───┼────────────┤