docs: update README.md

Author: sago35

README.md

@@ -5,7 +5,8 @@ TinyFont
 
 TinyFont is a font/text package for [TinyGo](https://tinygo.org/) displays. It is heavily based on [Adafruit's GFX library](https://github.com/adafruit/Adafruit-GFX-Library).
 
-![example](./tinyfont.png)
+![example](./images/tinyfont.png)
+![example](./images/rubikmoonrocks.png)
 
 
 This package is experimental and may change in the future. It has not been optimized for speed or memory..
@@ -18,9 +19,10 @@ The fonts compiled here were just converted or made compatible, and the original
 
 ## Generate your own font
 
-You can use tinyfontgen to generate a tinyfont from a bdf font.  
+You can use tinyfontgen to generate a tinyfont from a bdf/ttf font.  
 
-https://github.com/tinygo-org/tinyfont/tree/release/cmd/tinyfontgen
+https://github.com/tinygo-org/tinyfont/tree/release/cmd/tinyfontgen  
+https://github.com/tinygo-org/tinyfont/tree/release/cmd/tinyfontgen-ttf  
 
 ## Incompatibility warning
 

cmd/tinyfontgen-ttf/README.md

@@ -0,0 +1,61 @@
+# tinyfontgen-ttf
+
+Generate a font file for tinyfont project.  
+
+* https://tinygo.org/x/tinyfont
+
+## Description
+
+By default, all ASCII characters are included.  
+To save font flash size, you can delete the output Glyph on a line-by-line basis.  
+If you want to include non-ASCII characters, you can use one of the following methods
+
+* Specify the -all option to output all characters contained in the ttf font.
+* Outputs all characters contained in the string specified by -string
+* Output all characters in the file specified by -string-file.
+* Fonts generated by tinyfontgen-ttf are 2-bit-color, so they will not display well on non color LCDs.
+    * In the current version, the background must be white
+
+```
+usage: tinyfontgen-ttf [flags] [path ...]
+  -all
+        include all ascii glyphs (codepoint <= 255) in the font
+  -ascii
+        include all glyphs in the font (default true)
+  -dpi int
+        dpi for font (default 75)
+  -fontname string
+        font name (default "TinyFont")
+  -output string
+        output path
+  -package string
+        package name (default "main")
+  -size int
+        size for font (default 12)
+  -string string
+        strings for font
+  -string-file value
+        strings file for font (can be set multiple times)
+  -verbose
+        run verbosely
+  -yadvance int
+        new line distance
+```
+
+## Examples
+
+### RubikMoonrocks
+
+https://fonts.google.com/specimen/Rubik+Moonrocks?query=rub
+
+```
+$ go run ./cmd/tinyfontgen-ttf --size 32 --package rubikmoonrocks --fontname RubikMoonrocks ./RubikMoonrocks-Regular.ttf --output rubikmoonrocks/font.go
+```
+
+## Installation
+
+    go install tinygo.org/x/tinyfont/cmd/tinyfontgen-ttf@latest
+
+## License
+
+[This project is licensed](../../LICENSE) under the BSD 3-clause license, just like the [Go project](https://golang.org/LICENSE) itself.

cmd/tinyfontgen/README.md

@@ -97,7 +97,7 @@ Approx. 127 bytes
 
 ## Installation
 
-    go get tinygo.org/x/tinyfont/cmd/tinyfontgen
+    go install tinygo.org/x/tinyfont/cmd/tinyfontgen@latest
 
 ## License