Added Sealights Framework to readme.md (#878)

Author: alonweiss-sl

README.md

@@ -106,6 +106,7 @@ The buildpack supports extension through the use of Git repository forking. The
   * [PostgreSQL JDBC](docs/framework-postgresql_jdbc.md) ([Configuration](docs/framework-postgresql_jdbc.md#configuration))
   * [ProtectApp Security Provider](docs/framework-protect_app_security_provider.md) ([Configuration](docs/framework-protect_app_security_provider.md#configuration))
   * [Riverbed AppInternals Agent](docs/framework-riverbed_appinternals_agent.md) ([Configuration](docs/framework-riverbed_appinternals_agent.md#configuration))
+  * [Sealights Agent](docs/framework-sealights_agent.md) ([Configuration](docs/framework-sealights_agent.md#configuration))
   * [Seeker Security Provider](docs/framework-seeker_security_provider.md) ([Configuration](docs/framework-seeker_security_provider.md#configuration))
   * [Spring Auto Reconfiguration](docs/framework-spring_auto_reconfiguration.md) ([Configuration](docs/framework-spring_auto_reconfiguration.md#configuration))
   * [Spring Insight](docs/framework-spring_insight.md)