CNMF working version

[melanieihuei]

Create the working flow of neuro finding using CNMF as follows:

1. Input .tiff images and transform into .tif movies.
2. Create related directories for saving figures, sparse matrix, and predictions.json files.
3. Process cnmf and output the selected neurons' pixels locations
4. Transform pixels into (x,y) coordinates and output individuals json files and entire json file.

Environment setting

Environment setting is complicated (See issue #5 ) so the installation instruction is updated in readme.

Possible parameters affecting accuracy:

(check this part and try more combination)

• [x] K (number of neuron expected, default=300)
• [x] gSig (expected half size of neurons, default=[3,3])
• [x] merge_thresh (merging threshold, max correlation allowed, default=0.8)

The script has generated two of the testing predictions so far, please review this request after every prediction is generated.