add the very first version
essage=change ham an to ham toa
essage=change in to in con
add ghe gum at the end
add sample file
add master file
add file for functions: vector-length, vector-ref, vector-take, vector-drop
add file for functions: vector-append, vector-set!
add file for function: if
add file for function: cond
Merge https://github.com/ayaderaghul/primrose