Merge pull request #104 from jacobwg/remove-h-completion

Remove autocompletion for deleted `h` function
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Include the count, too
contributers => contributors (closes #112)
executable
More barebones installs
Grammar
install ruby-build, too
fix ack command on debian
Merge pull request #121 from victorklos/fix_debian_search_issue_120

fix ack command on debian
fix typo in debian search fix
Merge pull request #122 from victorklos/fix_debian_search_typo

fix typo in debian search fix
update rbenv.zsh according to manpage
Merge pull request #123 from victorklos/rbenv_inclusion_per_docs

update rbenv.zsh according to manpage