Various improvements

v1.01:
- For better control, modification commands are now executed in the order in which they appear in the program's command line arguments
- Changed option -s, --search, to -q, --query; it will now return exit code 0 if the queried parameter exists - otherwise 1
- Added option -s, --set: overwrites an existing parameter or creates a new one
- Option -a, -add will never overwrite existing data
- Added a better explanation for how modifications fail in the usage information, and some examples in the README.md

v1.02:
- Fixed -e, --edit not overwriting old data with zeros

Add files via upload

Update README.md

Update README.md

Implemented write access and options

Rewrite in C

First version of a rewrite in C. Writing to files is currently not implemented.