Refine readme

[st0012]

The readme now has a full list of all the SDK gems with a link to the change log. It also looks better imo 😉

[codecov-io]

Codecov Report

Merging #1366 (fa601ce) into master (86dcf3c) will decrease coverage by 10.81%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           master    #1366       +/-   ##
===========================================
- Coverage   98.08%   87.26%   -10.82%     
===========================================
  Files         208       38      -170     
  Lines        9173     1154     -8019     
===========================================
- Hits         8997     1007     -7990     
+ Misses        176      147       -29     

Impacted Files	Coverage Δ
sentry-ruby/lib/sentry/integrable.rb	0.00% <0.00%> (-100.00%)	⬇️
sentry-sidekiq/lib/sentry-sidekiq.rb	0.00% <0.00%> (-100.00%)	⬇️
sentry-sidekiq/lib/sentry/sidekiq/error_handler.rb	0.00% <0.00%> (-100.00%)	⬇️
...entry-sidekiq/lib/sentry/sidekiq/context_filter.rb	0.00% <0.00%> (-100.00%)	⬇️
...iq/lib/sentry/sidekiq/sentry_context_middleware.rb	0.00% <0.00%> (-100.00%)	⬇️
sentry-rails/spec/sentry/rails/client_spec.rb	6.45% <0.00%> (-93.55%)	⬇️
sentry-rails/app/jobs/sentry/send_event_job.rb	61.11% <0.00%> (-16.67%)	⬇️
...ls/lib/sentry/rails/tracing/abstract_subscriber.rb	84.61% <0.00%> (-11.54%)	⬇️
sentry-rails/lib/sentry/rails/active_job.rb	96.96% <0.00%> (-0.18%)	⬇️
sentry-rails/lib/sentry/rails/configuration.rb	100.00% <0.00%> (ø)
... and 171 more

---

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[bruno-garcia]

LGTM!