A build file and README for the QuinLED-Dig-Quad Preassembled (#1643)

* runs w/ multi and temp on my preasmbld QL-DQuad

* working build file

* runs w/ multi and temp on my preasmbld QL-DQuad

* working build file

* Remove custom info

* Added README, found the UI update wasn't necessary

* Rebase the precompiled HTML file

* Spellcheck

Co-authored-by: cheffpj2 <patrick.j.mcdonough@gmail.com>

usermods/quinled_digquad_preassembled_unofficial_v0.1/README.md

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+# QuinLED-Dig-Quad Preassembled Unofficial Build
+
+This usermod targets the [Preassembled QuinLED-Dig-Quad](https://quinled.info/pre-assembled-quinled-dig-quad/). Tested on board revision v1r6b,
+and includes the following features:
+
+ * **Multi-channel Support** - enabling use of LED1, LED2, LED3, LED4 pins to work using segments
+ * **Temperature Sensor Support** - pulls readings from the built-in temperature sensor and adds the reading to the *Info* page in the UI
+
+## Background
+
+As a starting point, you should check out this awesome video from Quindor: [How to compile WLED yourself](https://quinled.info/2020/12/22/livestream-wled-compile/). The usermod you are reading now just provides some shortcuts for parts of what were covered in that video.
+
+## Build Firmware with Multi-channel and Temp Support
+
+1. Copy the `platformio_override.ini` file to the project's root directory
+1. If using VS Code with the PlatformIO plugin like in the video, you will now see this new project task listed in the PLATFORMIO panel at the bottom as `env:QL-DigQuad-Pre-v0.1` (you probably need to hit the refresh button) 
+
+   <img src="images/pio-screenshot.png" width="400px"/>
+
+1. Edit this file from the root directory as needed:
+
+   <img src="images/params.png" width="400px"/>
+
+   * `PIXEL_COUNTS` may need to be adjusted for your set-up. E.g. I have lots of LEDs in Channel 1, but that's probably unusual for most
+   * `DATA_PINS` may need to be changed to "16,3,1,26" instead of "16,1,3,26" apparently depending on the board revision or some such
+
+1. Build the mod (e.g. click `Build` from the project task circled above) and update your firmware using the `QL-DigQuad-Pre-v0.1` file, e.g. using _Manual OTA_ from the Config menu. Based on the video and my own experience, you might need to build twice 🤷‍♂️.
+
+## Observing Temperature
+
+Hopefully you can now see the Temperature listed in the Info page. If not, use Chrome Developer Tools to find the current temperature
+
+1. Open the Developer Tools Console
+2. Enter `lastinfo.u.Temperature` to view the Temperature array
+
+   <img src="images/json-temp.png" width="300px"/>
+

usermods/quinled_digquad_preassembled_unofficial_v0.1/platformio_override.ini

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+; QuinLED-Dig-Quad Preassembled Unofficial
+
+[env:QL-DigQuad-Pre-v0.1]
+extends = env:esp32dev
+build_flags = ${common.build_flags_esp32} 
+    -D ESP32_MULTISTRIP 
+    -D NUM_STRIPS=4 
+    -D PIXEL_COUNTS="600, 300, 300, 300" 
+    -D DATA_PINS="16,1,3,26" 
+    -D RLYPIN=19 
+    -D BTNPIN=17
+    -D USERMOD_DALLASTEMPERATURE
+    -D USERMOD_DALLASTEMPERATURE_MEASUREMENT_INTERVAL=10000
+lib_deps = ${env.lib_deps}
+    milesburton/DallasTemperature@^3.9.0
+    OneWire@~2.3.5