Readme update.

README.md

@@ -20,6 +20,7 @@ Access to the `/dev/i2c` device files, which means either:
 
 ## Dependencies
 * libi2c-dev
+* libnvidia-ml-dev (if building with `USE_NVML=1`)
 
 ## Building
 `make`
@@ -27,7 +28,7 @@ Access to the `/dev/i2c` device files, which means either:
 ## Optional features
 
 ### NVML support
-Add the make flag `USE_NVML=1` and the it will also display the main GPU temperature ("GPU1") as reported by the NVIDIA driver.  It will also display the performance cap/clock reason.
+Add the make flag `USE_NVML=1` and the it will also display the main GPU temperature ("GPU1") as reported by the NVIDIA driver.  It will also display the performance cap/clock reason.  This requires NVML development files to be installed.
 
 ## Usage
 Note that when controlling fans directly through iCX3 they will fall offline from the Nvidia driver and show as 0 RPM until you return them to automatic mode.
@@ -52,19 +53,27 @@ Read sensors:
 ```text
 $ ./evga-icx
 #0: EVGA GeForce RTX 3090 FTW3 Ultra v2 (/dev/i2c-3) @ c:00.0
-Fan 0: 1934 RPM (64/0%, Auto)
-Fan 1: 1930 RPM (64/0%, Auto)
-Fan 2: 1944 RPM (64/0%, Offset)
+Fan 0: 1122 RPM (37/0%, Auto)
+Fan 1: 1177 RPM (39/0%, Auto)
+Fan 2: 1189 RPM (39/0%, Offset)
 Ext. fan: 0 RPM (0/0%, Offset)
-GPU2: +64.1°C
-MEM1: +62.2°C
-MEM2: +58.2°C
-MEM3: +62.2°C
-PWR1: +54.3°C
-PWR2: +59.4°C
-PWR3: +66.0°C
-PWR4: +64.3°C
-PWR5: +57.6°C
+GPU1: +36°C
+GPU2: +41.2°C
+MEM1: +42.8°C
+MEM2: +41.1°C
+MEM3: +41.5°C
+PWR1: +40.5°C
+PWR2: +41.2°C
+PWR3: +41.9°C
+PWR4: +42.5°C
+PWR5: +42.0°C
+Clock reasons: GPU idle (0x1)
+```
+
+Compact one-line mode:
+```text
+$ ./evga-icx --compact
+#0 FAN  37  39  39   0% GPU  35  41 MEM  41  41  41 PWR  40  41  42  42  42°C CLK Idle
 ```
 
 Set external fan to follow Nvidia driver controlled speed with a -500 RPM offset: