update docs

readme update (#45)

* readme update 

Co-authored-by: agnieszka-miszkurka <miszkur@student.agh.edu.pl>

handling not terminated string

Handle not terminated string literal (#44)

* update README

* handle not terminated string literals

Co-authored-by: agnieszka-miszkurka <miszkur@student.agh.edu.pl>

docs

add docs

updated illegal token handling

• updated illegal token handling
• updated .gitignore

Initial release

v1.0.0

change os.exit to panic and recover (#40)