Docs and unit tests for meta module

doc/fsl.utils.meta.rst

+``fsl.utils.meta``
+==================
+
+.. automodule:: fsl.utils.meta
+    :members:
+    :undoc-members:
+    :show-inheritance:

tests/test_meta.py

+#!/usr/bin/env python
+#
+# test_meta.py -
+#
+# Author: Paul McCarthy <pauldmccarthy@gmail.com>
+#
+
+import fsl.utils.meta as meta
+
+
+def test_meta():
+    m = meta.Meta()
+
+    data = {'a': 1, 'b' : 2, 'c' : 3}
+
+    for k, v in data.items():
+        m.setMeta(k, v)
+
+    for k, v in data.items():
+        assert m.getMeta(k) == v
+
+    assert list(data.keys())   == list(m.metaKeys())
+    assert list(data.values()) == list(m.metaValues())
+    assert list(data.items())  == list(m.metaItems())