README.md in acclir-0.1.0 vs README.md in acclir-0.2.0

@@ -2,28 +2,59 @@
 
 AtCoder CLI developed in Ruby.
 
 ## Installation
 
-TODO: Replace `UPDATE_WITH_YOUR_GEM_NAME_PRIOR_TO_RELEASE_TO_RUBYGEMS_ORG` with your gem name right after releasing it to RubyGems.org. Please do not do it earlier due to security reasons. Alternatively, replace this section with instructions to install your gem from git if you don't plan to release to RubyGems.org.
-
 Install the gem and add to the application's Gemfile by executing:
 
-    $ bundle add UPDATE_WITH_YOUR_GEM_NAME_PRIOR_TO_RELEASE_TO_RUBYGEMS_ORG
+```
+$ bundle add acclir
+```
 
 If bundler is not being used to manage dependencies, install the gem by executing:
 
-    $ gem install UPDATE_WITH_YOUR_GEM_NAME_PRIOR_TO_RELEASE_TO_RUBYGEMS_ORG
+```
+$ gem install acclir
+```
 
 ## Usage
 
-TODO: Write usage instructions here
+```
+$ acclir help
+Acclir commands:
+  acclir help [COMMAND]  # Describe available commands or one specific command
+  acclir login           # Login AtCoder
+  acclir new CONTEST_ID  # Generate files for the contest
+```
 
+## Examples
+
+First, login.
+
+```
+$ acclir login
+```
+
+Prepare for AtCoder Beginner Contest 284.
+
+```
+$ acclir new abc284
+```
+
+`abc284` is the ID assigned to the contest URL.  
+https://atcoder.jp/contests/abc284
+
+Once the problem is solved, the test can be run.
+
+```
+$ ruby abc284/abc284_a/main_test.rb
+```
+
 ## Development
 
 After checking out the repo, run `bin/setup` to install dependencies. Then, run `rake spec` to run the tests. You can also run `bin/console` for an interactive prompt that will allow you to experiment.
 
 To install this gem onto your local machine, run `bundle exec rake install`. To release a new version, update the version number in `version.rb`, and then run `bundle exec rake release`, which will create a git tag for the version, push git commits and the created tag, and push the `.gem` file to [rubygems.org](https://rubygems.org).
 
 ## Contributing
 
-Bug reports and pull requests are welcome on GitHub at https://github.com/[USERNAME]/acclir.
+Bug reports and pull requests are welcome on GitHub at https://github.com/n0h0/acclir.