Screenshot added.

git-svn-id: https://plugins.svn.wordpress.org/nepali-land-converter/trunk@1017927 b8457f37-d9ea-0310-8a92-e5e31aec5664
Readme updated.

git-svn-id: https://plugins.svn.wordpress.org/nepali-land-converter/trunk@1017928 b8457f37-d9ea-0310-8a92-e5e31aec5664