Regenerate nvim config

config/neovim/store/lazy-plugins/git-messenger.vim/test/README.md

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+### How to Run tests
+
+Setup:
+
+```
+$ cd /path/to/git-messenger.vim
+$ git clone https://github.com/thinca/vim-themis.git
+```
+
+Run tests on `nvim`:
+
+```
+$ THEMIS_VIM=nvim ./vim-themis/bin/themis test/all.vimspec
+```
+
+Run tests on `vim`:
+
+```
+$ ./vim-themis/bin/themis test/all.vimspec
+```
+
+### How to run guard
+
+Install [guard][] and [guard-shell][] as prerequisites.
+
+```
+$ guard -G test/Guardfile
+```
+
+It watches your file changes and runs tests automatically.
+
+### How to take coverage
+
+Set `$THEMIS_PROFILE` to take profiler log.
+
+```
+$ THEMIS_PROFILE=profile.txt ./vim-themis/bin/themis test/all.vimspec
+```
+
+It generates `profile.txt`. And run [covimerage][] to make a coverage file for `coverage` command.
+
+```
+$ covimerage write_coverage profile.txt
+$ coverage report
+```
+
+[guard]: https://github.com/guard/guard
+[guard-shell]: https://github.com/guard/guard-shell
+[covimerage]: https://github.com/Vimjas/covimerage