README added

Author: ymarcon

README.md

@@ -0,0 +1,26 @@
+# datashield-opal-python
+
+DataSHIELD Client Interface implementation for OBiBa/Opal
+
+## Installation
+
+```
+pip install datashield-opal
+```
+
+## Usage
+
+```
+from datashield import DSSession, DSLoginBuilder, DSError
+
+url = 'https://opal-demo.obiba.org'
+builder = DSLoginBuilder().add('server1', url, 'dsuser', 'P@ssw0rd').add('server2', url, 'dsuser', 'P@ssw0rd')
+logins = builder.build()
+
+session = DSSession(logins)
+session.open()
+
+# do some DataSHIELD analysis stuff
+
+session.close()
+```