Release notes for v1.0.0

Changed file name from README.md to README.txt
Changed heading from modpack-1.7.10 to VictiniX's Pack 1.7.10
Added release notes for v1.0.0
Update and rename README.md to README.txt

Renamed README.md to README.txt (for real this time)
Merge pull request #2 from VictiniX888/README-edits

README edits, fixes #1