docs: Add a Sponsors.md file

Add a documentation page with information on how to support Klipper.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>

README.md

@@ -13,4 +13,6 @@ To begin using Klipper start by
 [installing](https://www.klipper3d.org/Installation.html) it.
 
 Klipper is Free Software. See the [license](COPYING) or read the
-[documentation](https://www.klipper3d.org/Overview.html).
+[documentation](https://www.klipper3d.org/Overview.html). We depend on
+the generous support from our
+[sponsors](https://www.klipper3d.org/Sponsors.html).

docs/FAQ.md

@@ -2,8 +2,8 @@
 
 ## How can I donate to the project?
 
-Thanks. Kevin has a Patreon page at:
-[https://www.patreon.com/koconnor](https://www.patreon.com/koconnor)
+Thank you for your support. See the [Sponsors page](Sponsors.md) for
+information.
 
 ## How do I calculate the rotation_distance config parameter?
 

docs/Sponsors.md

@@ -0,0 +1,30 @@
+# Sponsors
+
+Klipper is Free Software. We depend on the generous support from
+sponsors. Please consider sponsoring Klipper or supporting our
+sponsors.
+
+## Klipper Developers
+
+### Kevin O'Connor
+
+Kevin is the original author and current maintainer of Klipper.  Kevin
+has a Patreon page at:
+[https://www.patreon.com/koconnor](https://www.patreon.com/koconnor)
+
+### Eric Callahan
+
+Eric is the author of bed_mesh, spi_flash, and several other Klipper
+modules.  Eric has a donations page at:
+[https://ko-fi.com/arksine](https://ko-fi.com/arksine)
+
+## Related Klipper Projects
+
+Klipper is frequently used with other Free Software. Consider using or
+supporting these projects.
+
+* [Moonraker](https://github.com/Arksine/moonraker)
+* [Mainsail](https://github.com/mainsail-crew/mainsail)
+* [Fluidd](https://github.com/fluidd-core/fluidd)
+* [OctoPrint](https://octoprint.org/)
+* [KlipperScreen](https://github.com/jordanruthe/KlipperScreen)

docs/_klipper3d/mkdocs.yml

@@ -135,3 +135,4 @@ nav:
     - CANBUS.md
     - TSL1401CL_Filament_Width_Sensor.md
     - Hall_Filament_Width_Sensor.md
+  - Sponsors.md

docs/index.md

@@ -15,3 +15,4 @@ To begin using Klipper start by [installing](Installation.md) it.
 
 Klipper is Free Software. Read the [documentation](Overview.md) or
 view [the Klipper code on github](https://github.com/Klipper3d/klipper).
+We depend on the generous support from our [sponsors](Sponsors.md).