chore: kemal + crystal setup

.gitignore

@@ -1,40 +1,5 @@
-# See https://help.github.com/articles/ignoring-files for more about ignoring files.
-#
-# If you find yourself ignoring temporary files generated by your text editor
-# or operating system, you probably want to add a global ignore instead:
-#   git config --global core.excludesfile '~/.gitignore_global'
-
-# Ignore bundler config.
-/.bundle
-
-# Ignore all logfiles and tempfiles.
-/log/*
-/tmp/*
-!/log/.keep
-!/tmp/.keep
-
-# Ignore uploaded files in development
-/storage/*
-!/storage/.keep
-
-/node_modules
-/yarn-error.log
-
-/public/assets
-.byebug_history
-
-# Ignore master key for decrypting credentials and more.
-/config/master.key
-
-# Ignore coverage reports
-/coverage/*
-
-/public/packs
-/public/packs-test
-/node_modules
-/yarn-error.log
-yarn-debug.log*
-.yarn-integrity
-
-# Ignore keys
-*.key
+/docs/
+/lib/
+/bin/
+/.shards/
+*.dwarf