Feature added : Scanning of directories (Issue #77)

[SinghShreya05]

1. Made changes in atarashii.py file
2. Added a "scandir" function
3. Added a "--scandir" in ArgumentParser

This is with respect to issue #77. Please review the PR. @hastagAB @Kaushl2208

[SinghShreya05]

1. Checked whether "inputFile" is either a file or a directory.
2. If it's a directory, every file inside the directory or sub-directories will be scanned and for each file "atarashii_runner" will be called.
3. Each result will be printed as they come and will be stored in JSON.
4. Every change is made in the "atarashii.py" file itself.

This is with respect to issue #77. Please review @GMishx

[SinghShreya05]

1. Corrected Indentation from 4 to 2 spaces.
2. Fixed printing of output of each scan as the result comes.
3. Fixed formatting of JSON output to get the desired format.

Kindly review it @GMishx

[GMishx]

Tried running the code, got following error:

$ atarashi -a Ngram -s BigramCosineSim atarashi/libs/
Traceback (most recent call last):
  File "/atarashi/.venv/bin/atarashi", line 33, in <module>
    sys.exit(load_entry_point('atarashi', 'console_scripts', 'atarashi')())
  File "/atarashi/atarashi/atarashii.py", line 153, in main
    for dirpath, dirnames, filenames in os.walk(filepath):
NameError: name 'filepath' is not defined

[SinghShreya05]

1. Implemented json.dumps() instead of simple print.
2. The array generated contains "," between two objects.

[SinghShreya05]

1. Removed "dirresult" variable from the main function.
2. Changed the argparse input "inputFile" to "inputPath" and the help message as well. Please review it.

[GMishx]

@SinghShreya05 , since we try to keep our git history clean and this PR adds a single feature (which can not be divided into multiple commits), can you please squash the commits into single commit before we can merge it?

[SinghShreya05]

@GMishx I have created a new branch "feat/scandirectory" and sent a new pull request with just one commit. I'm closing this PR.

[Kaushl2208]

@SinghShreya05, That's not how this works. He will need to review and test the functionality again. It will cost more time and energy. Try squashing the commits for the PR which is approved.