Update README.md

Author: Gravifer

README.md

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 [![View notebooks](https://wolfr.am/HAAhzkRq)](https://wolfr.am/TPaqP8aH)
 
 A wolfram language package for applications of semi-definite programming in queuing theory.
+
+**Components:**
+- [x] DistributionMomentTruncation: represent truncated moment sequences upon which the [moment problem](https://en.wikipedia.org/wiki/Moment_problem) can be raised.
+- [ ] ProcessMomentTruncation: represent truncated moment (including auto-correlating joints) sequences of (weakly-)steady processes.
+- [ ] QueueMomentTruncation: represent truncated moment sequences of queues, suitable for the use in semi-definite probramming.
+- [ ] _(possibly) ProcessMomentTruncation: represent truncated moment sequences of (weakly-)steady processes._