Including get_member_number function

Get_member_number function returns the value of the name the user
is searching.
Adding functions add_member and remove_member

The function add_member adds a new member name and assigns the
member value. The function remove_member only removes a member node
(name and value).
Also moves functions related to database operations into a header
file.
Uploading some files related to the project.

Uploading new files: Makefile, TODO.
Merge pull request #8 from dbkreling/master

Adding database operation functions