syntax file for vs code lisp extension

Readme.md

@@ -23,6 +23,10 @@ EOT
 
 ml -f /tmp/qs.lsp
 ```
+or
+```
+ml -f tests/test.lsp
+```
 #### Interactive mode
 ```
 ml
@@ -65,12 +69,13 @@ utils/local_install.sh
 
 #### Code
 - add documentation
+- add more unit test, mainly for usql
 - rename constants in ml_profiler.h
 - replace to_string macro in ml.cpp
 - add instrumentation (time, nr of evals, num of atoms, debug info, debug environment etc)
 
 #### Language
-- support for "t" symbol as a true 
+- support for "#t" or "t" symbol as a true and "#f" for false
 - support for exceptions
 - string functions
     - compare - needed for sorting, cmp ignore case