Added an option to dll_print function, for whether to print the elements inline or not
Renamed dll_get_data to dll_edit_data as it better represents its functionality
Update README.md

Adding documentation (8 more function documentation to come)
Merge branch 'develop' of https://github.com/chris-asl/doubly-linked-list-API into develop

Conflicts:
	demo.c
Renamed a var in a function
Committed full documentation
Merge branch 'master' of https://github.com/chris-asl/doubly-linked-list-API
Merge branch 'develop' - public version
Removed Sublime Text project and workspace files
Update README.md
Resolved a typo
Merge branch 'develop' of https://github.com/chris-asl/doubly-linked-list-API into develop

Conflicts:
	README.md