Fix Forge maven URL and provide instructions on how to build

[embeddedt]

Without the Maven change, builds will fail because forgeSrc.jar is unavailable.

I've also added the EnderCore JAR to .gitignore so it doesn't show up as an untracked file.

[Pelotrio]

Can you actually build and run the game with this @embeddedt ? I had so many problems trying to do that with the current build gradle.

[embeddedt]

It did work at the time, but since then it seems to have broken again, as Player's Maven repository (http://maven.ic2.player.to) is now down. Do you know of any other Maven repos with Forestry and/or CoFHCore? Those are the two dependencies erroring for me.

[Pelotrio]

I encountered the same problem when I tried building forestry. After searching for a bit I just downloaded it and added it locally. Really annoying how hard it can be these days just to build a mod.

[embeddedt]

Yes, and it definitely does not help that the community as a whole is becoming increasingly hostile to any pre-1.16 development.

You guys are doing great work with More Refined Storage. 🙂

[Pelotrio]

Thanks a lot it really is a nice project. Its also nice to see how many times I stumbled over your name just by looking at open prs and comments. I will see if I can build enderio with your changes tomorrow.

[embeddedt]

The Forestry Maven repository came back. I tested this again and fixed one other Maven issue. It does build now without problems. runClient still has issues because of EnderCore being loaded twice.

This will likely be superseded by #5545 anyways.

[Pelotrio]

So you still cant run it? Is there anything that makes it work?

[embeddedt]

You should be able to run the reobfuscated JAR produced by ./gradlew build. It's just userdev (./gradlew runClient) that doesn't work properly.