ekaterinakugot/first_job: for the first acquaintance with git @ v1.1

for the first acquaintance with git

Kugot Ekaterina 1fbd5c4376 Merge branch 'master' into test1		1 rok temu
images	1fbd5c4376 Merge branch 'master' into test1	1 rok temu
mask.py	42f1e0aefb add a file with an example of working with masks for images	1 rok temu
nominal.py	1fbd5c4376 Merge branch 'master' into test1	1 rok temu