Minor Fixes

• Added LGTM code quality badge
• Made some minor fixes to mailMerge.js regarding quality control

Minor Fix

Fixed typo

Modified Prompt to Enter Subject of Template Gmail Draft

for better readability

Nested Merge Renamed to Group Merge

for a more easy-to-understand function

Updated README

Updated README to reflect changes installed in v1.0.1

Fixed Line Breaks Reflected in Plain Text Mail

Line breaks within merge data spreadsheet will now be reflected on the plain text version of the merged Gmail.
HTML version of the Gmail will not reflect the line breaks; they will be handled as spaces.

Nested Merge Enabled

The nested merge feature is enabled and ready to use

Basic Pre-Release

• Basic mail merge using Gmail and Google Spreadsheet
• Nested Merge feature not ready
• README.md note ready