added date functions, and pwd
added alternative queries to datetime
Find module for searching files

* find files with extension
* find files with extension that contains string
find processes
"list of all processes"
"processes by user root"
"show me my processes matching log"
cleanup
Merge pull request #26 from cheniel/date

Added datetime.rb and one command to user.rb
Merge pull request #22 from pannous/dev

processes
Merge remote-tracking branch 'origin/master' into dev
Cleanup.
Added version.
Merge pull request #21 from mlitbk/find

Find module for searching files (#19)
Start tests.
Add automatic install to readme.
Merge remote-tracking branch 'origin/dev' into dev
Add more explanations to the readme.
Update changelog.
Merge remote-tracking branch 'origin/master' into dev
Update version.
Merge remote-tracking branch 'origin/dev'