Add entrypoints for the composites and samplers

setup.py

@@ -66,6 +66,16 @@
     'Programming Language :: Python :: 3.7',
     ]
 
+# For the Ocean's SDK, each of these composites/samplers are added to the dwave.composites and
+# dwave.samplers namespace respectively.
+entry_points = {'dwave.samplers': ['ExactSolver = dimod:ExactSolver',
+                                   'RandomSampler = dimod:RandomSampler',
+                                   ],
+                'dwave.composites': ['StructureComposite = dimod:StructureComposite',
+                                     'SpinReversalTransformComposite = dimod:SpinReversalTransformComposite',
+                                     'FixedVariableComposite = dimod:FixedVariableComposite',
+                                     ]}
+
 python_requires = '>=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*'
 
 try:
@@ -158,6 +168,7 @@ def run_setup(cpp):
         classifiers=classifiers,
         zip_safe=False,
         python_requires=python_requires,
+        entry_points=entry_points,
         **kw
     )