Add ds000001 test dataset (#36)

Author: kaitj

tests/data/README.md

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+# Test datasets
+
+[`ds000001`](https://openneuro.org/datasets/ds000001/versions/1.0.0) was obtained from the OpenNeuro.

tests/data/ds000001/README.md

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+This dataset was obtained from the OpenfMRI project (http://www.openfmri.org).
+Accession #: ds000001
+Description: Balloon Analog Risk Task
+
+Please cite the following references if you use these data:
+
+Schonberg TS, Fox CR, Mumford JA, Congdon E, Trepel C, Poldrack RA (2012). Decreasing ventromedial prefrontal cortex activity during sequential risk-taking: An fMRI investigation of the Balloon Analogue Risk Task. Frontiers in Decision Neuroscience, 6:80 doi: 10.3389/fnins.2012.00080
+
+Release history:
+7/10/2012: initial release
+
+3/21/2013: Updated release with QA information
+
+2/18/2016: Fixed orientation information in nifti headers for more consistent left-right determination
+
+This dataset is made available under the Public Domain Dedication and License
+v1.0, whose full text can be found at
+http://www.opendatacommons.org/licenses/pddl/1.0/.
+We hope that all users will follow the ODC Attribution/Share-Alike
+Community Norms (http://www.opendatacommons.org/norms/odc-by-sa/);
+in particular, while not legally required, we hope that all users
+of the data will acknowledge the OpenfMRI project and NSF Grant
+OCI-1131441 (R. Poldrack, PI) in any publications.

tests/data/ds000001/dataset_description.json

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+{
+    "BIDSVersion": "1.0.0",
+    "License": "CC0",
+    "Name": "Balloon Analog Risk-taking Task",
+    "ReferencesAndLinks": [
+        "Schonberg TS, Fox CR, Mumford JA, Congdon E, Trepel C, Poldrack RA (2012). Decreasing ventromedial prefrontal cortex activity during sequential risk-taking: An fMRI investigation of the Balloon Analogue Risk Task. Frontiers in Decision Neuroscience, 6:80 doi: 10.3389/fnins.2012.00080"
+    ],
+    "Authors": [
+        "Tom Schonberg",
+        "Christopher Trepel",
+        "Craig Fox",
+        "Russell A. Poldrack"
+    ],
+    "DatasetDOI": "10.18112/openneuro.ds000001.v1.0.0"
+}

tests/data/ds000001/sub-01/anat/sub-01_T1w.nii.gz

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tests/data/ds000001/sub-01/func/sub-01_task-balloonanalogrisktask_run-01_bold.nii.gz

@@ -0,0 +1,4 @@
+{
+    "RepetitionTime": 2.0,
+    "TaskName": "balloon analog risk task"
+}