Update README.md

Updated README.md to reflect Nincraft changes while still crediting TPPI devs.
Update README.md
Merge pull request #1 from Nincraft/Dev

Dev
Update ModVersions.txt

Added Galacticraft and SimplyJetpacks
Adding SimplyJetpacks config

Adding default config
Merge pull request #7 from Nincodedo/Dev

Added Simple Jetpacks and Galacticraft (and extra planets)