Update README.md

Simplify for now

README.md

@@ -1,17 +1,2 @@
 # go-toolbox
 A collection of Go modules.
-
-## [always](./always/)
-provides wrappers that simplify the usage of common try-like functions &
-methods.
-
-## [graceful](./graceful/)
-provides mechanisms for starting and stopping groups of services, primarily used
-to accomplish a graceful shutdown.
-
-## [memkv](./memkv/)
-provides a generic in-memory key-value store.
-
-## [probe](./probe/)
-provides types for use as health checks such as kubernetes' startup, liveness, &
-readiness probes.