added readme

README.md

@@ -0,0 +1,63 @@
+# What is this?
+
+A super dim library for clis. It is intended to be 5% of the work for 60% of
+the results.
+
+# Usage
+
+example:
+
+```go
+package main
+
+import (
+	"github.com/roodletoof/dim-cli"
+	_ "embed"
+)
+
+// note: main.go is *this* source file
+
+//go:embed main.go
+var thisFile string
+
+func main() {
+	dimcli.Help(thisFile)
+	var age = dimcli.GetPositional[int]()
+	var names = dimcli.GetKeyed(
+		"names",
+		[]string{"Alice", "Bob"},
+	)
+	var printBar = dimcli.Flag("print-bar")
+	// HELP STOP
+
+	println(age)
+	for _, name := range names {
+		println(name)
+	}
+	if printBar {
+		println("bar")
+	}
+}
+```
+
+The above program supports required positional parameters, optional keyed
+parameters, e.g. "--key value", flags "--some-flag", and a simple --help
+command.
+
+If anything is wrong with the arguments provided the program will panic with a
+pretty descriptive message. I think this is appropriate for most situations.
+    
+The Help function expects you to provide a string that contains the source code
+of where it was called. Use the embed package for this as in the example. It
+will print out all the source code between the call and the first instance
+where "HELP STOP" is found in the source code, if the --help flag is given to
+the program.
+
+The library does not check that you don't provide extra arguments, it only
+cares whether the arguments it tries to parse exist.
+
+Positional arguments and keyed arguments are parsed via the json package, so if
+you want to provide a list in the example above you would put this in the
+argument list: --names '["name1", "name2"]'
+
+This is super scuffed, and I hope you enjoy :)