Revert "Ruby gitignore"

This reverts commit 739cd4a4e4.

.gitignore

@@ -1,60 +1,3 @@
 src/db/
 src/vendor/
 src/public/auctions/
-src/doc/
-*.gem
-*.rbc
-/.config
-/coverage/
-/InstalledFiles
-/pkg/
-/spec/reports/
-/spec/examples.txt
-/test/tmp/
-/test/version_tmp/
-/tmp/
-
-# Used by dotenv library to load environment variables.
-# .env
-
-# Ignore Byebug command history file.
-.byebug_history
-
-## Specific to RubyMotion:
-.dat*
-.repl_history
-build/
-*.bridgesupport
-build-iPhoneOS/
-build-iPhoneSimulator/
-
-## Specific to RubyMotion (use of CocoaPods):
-#
-# We recommend against adding the Pods directory to your .gitignore. However
-# you should judge for yourself, the pros and cons are mentioned at:
-# https://guides.cocoapods.org/using/using-cocoapods.html#should-i-check-the-pods-directory-into-source-control
-#
-# vendor/Pods/
-
-## Documentation cache and generated files:
-/.yardoc/
-/_yardoc/
-/doc/
-/rdoc/
-
-## Environment normalization:
-/.bundle/
-/vendor/bundle
-/lib/bundler/man/
-
-# for a library or gem, you might want to ignore these files since the code is
-# intended to run in multiple environments; otherwise, check them in:
-# Gemfile.lock
-# .ruby-version
-# .ruby-gemset
-
-# unless supporting rvm < 1.11.0 or doing something fancy, ignore this:
-.rvmrc
-
-# Used by RuboCop. Remote config files pulled in from inherit_from directive.
-# .rubocop-https?--*

src/.yardoc/checksums

@@ -1,5 +0,0 @@
-lib/func.rb e758b61d3c4909c83ae2e4e48411765897132f63
-lib/debug.rb eb5c25993fecac1a68b72af6e651dd49b512d561
-lib/db_init.rb f625e959eda10f2b1dd66c1638c9e23c88623912
-lib/database.rb 709c3838109a1d82d0de7a6e15f35730f33022a0
-lib/db_models.rb 109dae3a1adb2c5f07397d73bac2d02bc82db6a9