Replace README.txt with README.md

Patch is working however issue is still there.

1.diff.txt:9: trailing whitespace.
It provides user interface to import Entity(Content and Taxonomy) from excel
1.diff.txt:14: trailing whitespace.

1.diff.txt:19: trailing whitespace.
- file/image
1.diff.txt:20: trailing whitespace.
- paragraph
1.diff.txt:44: trailing whitespace.
Install the Entities Import module as you would normally install a
warning: squelched 13 whitespace errors
warning: 18 lines add whitespace errors.

I will work on it.

Updated the changes.

Please review it.

I reviewed the MR!1 and there is still and an issue when applying the MR shown below:

1.diff.patch:14: trailing whitespace.

warning: 1 line adds whitespace errors.

I updated the changes, please review.
Thank You

I updated the MR to fix the issue.

Please review.
Thank You.

Patch is working and marking it to RTBC.