docs(generic): add support document & move debugging section there

CONTRIBUTING.md

@@ -26,24 +26,8 @@ sites](https://github.com/electron/electron#community).
 
 ### Debugging
 
-One way to troubleshoot potential problems is to set the `DEBUG` environment variable before
-running `electron-forge`. This will print debug information from the specified modules. The
-value of the environment variable is a comma-separated list of modules which support this logging
-feature. Known modules include:
-
-* `electron-download`
-* `electron-forge:*` (always use this one before filing an issue)
-* `electron-osx-sign`
-* `electron-packager`
-* `extract-zip`
-* `get-package-info`
-
-We use the [`debug`](https://www.npmjs.com/package/debug#usage) module for this functionality. It
-has examples on how to set environment variables if you don't know how.
-
-**If you are using `npm run` to execute `electron-forge`, run the `electron-forge` command
-without using `npm run` and make a note of the output, because `npm run` does not print out error
-messages when a script errors.**
+Troubleshooting suggestions can be found in the [support
+documentation](https://github.com/electron-userland/electron-forge/blob/master/SUPPORT.md#troubleshooting).
 
 ## Contribution suggestions
 

SUPPORT.md

@@ -0,0 +1,33 @@
+# Support for Electron Forge
+
+If you have questions about usage, we encourage you to browse the [website](https://electronforge.io/),
+and visit one of the several [community-driven sites](https://github.com/electron/electron#community).
+
+## Troubleshooting
+
+One way to troubleshoot potential problems is to set the `DEBUG` environment variable before
+running `electron-forge`. This will print debug information from the specified modules. The
+value of the environment variable is a comma-separated list of modules which support this logging
+feature. Known modules include:
+
+* `electron-compile:*`
+* `electron-download`
+* `electron-forge:*` (always use this one before filing an issue)
+* `electron-installer-debian`
+* `electron-installer-dmg`
+* `electron-installer-flatpak`
+* `electron-installer-redhat`
+* `electron-osx-sign`
+* `electron-packager`
+* `electron-rebuild`
+* `electron-windows-installer:main`
+* `electron-windows-store`
+* `extract-zip`
+* `get-package-info`
+
+We use the [`debug`](https://www.npmjs.com/package/debug#usage) module for this functionality. It
+has examples on how to set environment variables if you don't know how.
+
+**If you are using `npm run` to execute `electron-forge`, run the `electron-forge` command
+without using `npm run` and make a note of the output, because `npm run` does not print out error
+messages when a script errors.**