squash: update readme with feedback from Kayla

Author: arielvalentin

helpers/sql/README.md

@@ -1,20 +1,28 @@
 # OpenTelemetry Sql Helpers
 
-Todo: Add a description.
+This gem is intended to be used by the instrumentation libraries to provide a common set of helpers for SQL-related spans. It is not intended to be used directly by applications.
+
+## Installation
+
+Add a line similar to this in your `gemspec`:
 
-## How do I get started?
+```ruby
 
-Install the gem using:
+  spec.add_dependency 'opentelemetry-helpers-sql', '~> 0.3' # Use the approprite version
 
-```console
-gem install opentelemetry-helpers-sql
 ```
 
-Or, if you use [bundler][bundler-home], include `opentelemetry-helpers-sql` in your `Gemfile`.
+Update your `Gemfile` to use the latest version of the gem in the contrib, e.g.
 
-## Usage
+```ruby
 
-This gem is intended to be used by the instrumentation libraries to provide a common set of helpers for SQL-related spans. It is not intended to be used directly by applications.
+group :test do
+  gem 'opentelemetry-helpers-sql', path: '../../helpers/sql' # Use the approprite path
+end
+
+```
+
+## Usage
 
 Some database libraries do not have enough context to add sufficient details to client spans. In these cases, you can use the `OpenTelemetry::Helpers::Sql.with_attributes` to create a set of shared attributes to amend to a database span.
 
@@ -44,7 +52,6 @@ The OpenTelemetry Ruby gems are maintained by the OpenTelemetry Ruby special int
 
 The `opentelemetry-helpers-sql` gem is distributed under the Apache 2.0 license. See [LICENSE][license-github] for more information.
 
-[bundler-home]: https://bundler.io
 [repo-github]: https://github.com/open-telemetry/opentelemetry-ruby
 [license-github]: https://github.com/open-telemetry/opentelemetry-ruby-contrib/blob/main/LICENSE
 [ruby-sig]: https://github.com/open-telemetry/community#ruby-sig