T-4821 Use ingestion_* options, update outdated naming

Author: PetrHeinz

example-project/README.md

@@ -15,7 +15,7 @@ This will install all dependencies listed in the `Gemfile.lock` file.
 Then replace `<source_token>` and `<ingesting_host>` in `config.ru` with your actual source token and ingesting host which you can find by going to [Better Stack Telemetry](https://teleemetry.betterstack.com/dashboard) -> Source -> Configure.
 
 ```ruby
-http_io_device = Logtail::LogDevices::HTTP.new("<source_token>", logtail_host: "<ingesting_host>")
+http_io_device = Logtail::LogDevices::HTTP.new("<source_token>", ingesting_host: "<ingesting_host>")
 ```
 
 ## Run the example project

example-project/config.ru

@@ -7,7 +7,7 @@ use Logtail::Integrations::Rack::HTTPEvents
 use Logtail::Integrations::Rack::ErrorEvent
 
 # HTTP IO device sends logs to Better Stack, replace <source_token> and <ingesting_host> with your real source token and ingesting host
-http_io_device = Logtail::LogDevices::HTTP.new("<source_token>", logtail_host: "<ingesting_host>")
+http_io_device = Logtail::LogDevices::HTTP.new("<source_token>", ingesting_host: "<ingesting_host>")
 
 # STDOUT IO device sends logs to console output
 stdout_io_device = STDOUT

logtail-ruby-rack.gemspec

@@ -5,8 +5,8 @@ require "logtail-rack/version"
 Gem::Specification.new do |spec|
   spec.name          = "logtail-rack"
   spec.version       = Logtail::Integrations::Rack::VERSION
-  spec.authors       = ["Logtail"]
-  spec.email         = ["hi@logtail.com"]
+  spec.authors       = ["Better Stack"]
+  spec.email         = ["hello@betterstack.com"]
 
   spec.summary       = %q{Logtail integration for Rack}
   spec.homepage      = "https://github.com/logtail/logtail-ruby-rack"