Update README.md
Fixed issue with connectivity matrix (relevant only for nem solver)
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Merge pull request #9 from ahellander/periodic_bcs

Periodic bcs
Merge branch 'develop' of https://github.com/ahellander/pyurdme into develop
Merge pull request #10 from ahellander/develop

Develop
Connectivity tests are working
Merge pull request #53 from briandrawert/coral_model

Partially working periodic BCs