docs(readme): update readme

another readme change
fixed a formatting issue
added another item to the list of features

README.md

@@ -5,6 +5,7 @@ a math command line.
 currently supports:
 - lossy/non-exact math (will not store fractions)
 - basic math functions (e.g. sqrt, normal + inverse trig functions, abs)
+- a couple basic math constants (e.g. pi, e)
 - variables (currently do basically nothing)
 
 planned features:
@@ -13,6 +14,7 @@ planned features:
 - a custom math language
   - scripting support
   - user defined functions
+  
 will most of these features ever actually be added? probably not. but wishful thinking is important!
 
 ## usage