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README.md

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+[![Build Status](https://travis-ci.org/dexter2206/dimod-mock.svg?branch=master)](https://travis-ci.org/dexter2206/dimod-mock)
+
+# dimod-mock
+
+dimod-mock is a package for mocking dimod-based samplers, including the structured ones.
+It lets you easily test your routines before trying them out on sophisticated samplers or real hardware.
+
+# Installation
+
+To install run
+
+```
+pip install dimodmock
+```
+
+# Usage
+
+## Mocking simple samplers
+
+Suppose you created some instance of your sampler (derived from `dimod.Sampler`). This is how you create its mock
+
+```python
+import dimodmock
+
+sampler = ... # Create your sampler here
+mock = dimodmock.SamplerMock.from_sampler(sampler)
+```
+
+The mock object created this way has the following properties identical to the source sampler
+- `properties`
+- `parameters`
+
+The following methods are implemented:
+- `sample`
+- `sample_qubo`
+- `sample_ising`
+
+and have the same interface as the source sampler. In particular, call to those methods will fail
+if unknown parameters are passed as keyword arguments. The returned samples are choosen randomly at uniform.
+By default, the returned samplesets have one sample. See below for overriding this behaviour.
+
+## Mocking structured samplers
+
+You can also mock structured samplers. In this case use `dimodmock.StructuredMock.from_sampler`.
+In addition to the characteristics described above, the `StructuredMock` has also the following properties, identical
+to the source sampler:
+- `edgelist`
+- `nodelist`
+
+Also, `sample`, `sample_qubo`, `sample_ising` methods respect the samplers structure, so trying to solve
+mismatching instance will fail.
+
+## Support for `num_reads`
+
+By default, samplesets returned by all mocks contain only one sample. However, if the source sampler supports `num_reads`
+property (which is true in particular for `DWaveSampler`), it will be respected by the mock and the correct number
+of samples will be returned.
+
+## Advanced usage
+It is also possible to create mocks by specifying their properties in their initializer. For `SimpleMock` you need to specify 
+`properties` and `parameters`. For `StructuredMock` you also need to specify `edgelist` and `nodelist`.
+
+For instance, suppose you want to create a mock of a structured sampler defined on full graph of 3 nodes,
+having a `max_num_reads` property and `num_reads` parameter. Here is how to do it:
+
+```python
+from dimodmock import StructuredSampler
+
+mock = StructuredSampler(
+    nodelist=[0, 1, 2], 
+    edgelist=[(0, 1), (1, 2), (2, 0)], 
+    properties={"max_num_reads": 10},
+    parameters={"num_reads": ["max_num_reads"]},
+)
+```
+
+
+# Caveats
+
+Currently mocks don't validate keyword arguments passed to `sample*` methods. 
+So, in the example above, mock will happily accept `num_reads=100`. In the future, additional validation might be
+implemented.
+
+
+# Reporting issues
+Please report any issues you encounter using Github's issue tracker.