Revert "iss308 plot show current time meaningful to data source"

This reverts commit 6a282209f1db45fb685786944c4c9acc011d88f9.
Revert "Update README.md"

This reverts commit 7dc079b17fd568ffb7dbaf8b8b49329a57bb3fcf.
iss210
Revert "Revert "Update README.md""

This reverts commit 29fad0cf134910fe8b161245c83dae24eb8f3cba.
Revert "Revert "iss308 plot show current time meaningful to data source""

This reverts commit f8ae36f6307a8ac8c6332ffae8c5a95aa021eee5.
Merge pull request #316 from JieD/iss210

[Persistence] NPE when loading component without prior model state 210