Update readme with the changes

Author: sean-bailey

README.md

@@ -94,6 +94,8 @@ git submodule update
 #### Build from scratch
 
 ```shell
+git submodule init
+git submodule update
 mkdir build
 cd build
 cmake ..
@@ -148,7 +150,7 @@ cmake --build . --config Release
 ### Run
 
 ```
-usage: ./bin/sd [arguments]
+usage: ./build/bin/sd [arguments]
 
 arguments:
   -h, --help                         show this help message and exit
@@ -161,6 +163,7 @@ arguments:
   --control-net [CONTROL_PATH]       path to control net model
   --embd-dir [EMBEDDING_PATH]        path to embeddings.
   --upscale-model [ESRGAN_PATH]      path to esrgan model. Upscale images after generate, just RealESRGAN_x4plus_anime_6B supported by now.
+  --upscale-repeats                  Run the ESRGAN upscaler this many times (default 1)
   --type [TYPE]                      weight type (f32, f16, q4_0, q4_1, q5_0, q5_1, q8_0)
                                      If not specified, the default is the type of the weight file.
   --lora-model-dir [DIR]             lora model directory
@@ -186,6 +189,7 @@ arguments:
                                      <= 0 represents unspecified, will be 1 for SD1.x, 2 for SD2.x
   --vae-tiling                       process vae in tiles to reduce memory usage
   --control-net-cpu                  keep controlnet in cpu (for low vram)
+  --canny                            apply canny preprocessor (edge detection)
   -v, --verbose                      print extra info
 ```