Added a README with links to BioC.

Author: LTLA

README.md

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+# Differential analyses of Hi-C data
+
+|Environment|Status|
+|---|---|
+|[BioC-release](https://bioconductor.org/packages/release/bioc/html/diffHic.html)|[![Release OK](https://bioconductor.org/shields/build/release/bioc/diffHic.svg)](http://bioconductor.org/checkResults/release/bioc-LATEST/diffHic/)|
+|[BioC-devel](https://bioconductor.org/packages/devel/bioc/html/diffHic.html)|[![Devel OK](https://bioconductor.org/shields/build/devel/bioc/diffHic.svg)](http://bioconductor.org/checkResults/devel/bioc-LATEST/diffHic/)|
+
+**diffHic** implements methods for detecting differential interactions across biological conditions in a Hi-C experiment.
+Methods are provided for read alignment and data pre-processing into interaction counts, with the subsequent statistics analysis performed by **edgeR**.
+Check out the [Bioconductor landing page](https://bioconductor.org/packages/diffHic) for more details.