Merge pull request #14 from denzp/master

db initial implementation
Merge pull request #15 from denzp/backend

initial backend
Delete test_db.sqlite
Update .gitignore
Update README.md
Merge pull request #1 from summeragain/master

up to date
Merge pull request #16 from denzp/master

Merge pull request #1 from summeragain/master
Merge branch 'master' of github.com:denzp/labs-accounting

Conflicts:
	.gitignore