* clarification about killperson and secrets, rephrasing.
* how to develop without docker/test-kitchen
* doc changes about gh-pages branch. other clarifications.
* OSX has been renamed MacOS (except in travis-ci)
There are a lot of changes, multiple things were refactored: tests,
some commands, building and meta.
Several critical bugs fixed.
Changes:
1. Fixed#74, when `_user_required` was not working after reimporting keys
2. Closes#73, now it is possible to provide multiple emails to the `killperson` command
3. Closes#72, now it is possible to provide multiple emails to the `tell` command
4. Closes#71, now every doc in this project refer to `git-secret.io` instead of old `gh-pages` website
5. Closes#70, now installation section is removed from main `man` file
6. Closes#69, now "See also" section in the `man`s are clickable
7. Closes#61, added "Manual" section to the manuals
8. Refs #38, added `centos` Dockerfile, but `ci` testing is still failing
9. Refs #52, tests are refactored. Added `clean` command tests, removed a lot of hardcoded things, moved tests execution from `./temp` folder to `/tmp`, added a lot of new check in old tests, and some new test cases
10. Refactored `hide` and `clean` commands to be shorter
11. `shellcheck` is now supported with `make lint`
Additional features are not comming to 0.2.2 after this commit.
The full list of changes:
1. Added `.docker/` folder with Dockerfiles
2. Now `travis` runs integrational tests inside these containers
3. Now `travis` runs tests with `mac os x`
4. Now there are new ways to autodeploy `deb` and `rpm` packages
5. Fixed some issues
6. Also added `.ci/` folder, where utility scripts for travis are stored
7. Moved `git-hooks` into the separate folder: `utils/hooks/`
8. Added new target to the `Makefile`
9. `.gitignore` is updated to ignore `build/` folder and inner files
