DOC: linked shore examples to examples index
updated valid_examples.txt
RF: update multi_tensor_pdf with the correct signature
BF: increasing safety with shape=0 case
DOC: Changed peaks_from_model to default values
Merge pull request #288 from Garyfallidis/link_shore_examples

Link shore examples
DOC: fixed title and explanation on the number of processes
Updated valid examples
Merge pull request #289 from Garyfallidis/pfm_examples_check

Examples checked for peaks_from_model
BF: median otsu test was failing at 32 bit buildbots
Merge pull request #291 from Garyfallidis/fix_buildbot_fail_median_otsu_test

BF: median otsu test was failing at 32 bit buildbots
NF - added affine argument to streamline tools.
TST - added test for affine with streamline_mapping
RF - make coordinate mapping/inversion more clear
BF - fix target function
RF - cleaned up seeds_from_mask and added affine argument
NF - added include argument to target function
DOC - first draft of streamline tools tutorial
DOCS - make streamline_tools render properly as html
NF - added fetcher and reader for stanford labels data
TST - added tests for data fetcher