day 1 - add go fmt example

go-detailed-log/day-01/04-go-fmt-package.md

@@ -0,0 +1,50 @@
+# go fmt command
+
+The go fmt command formats your code, which allows a consistent standard of formatting
+
+The go fmt command and fmt package are two different things
+
+## Pronounciation
+
+go fmt is pronounced as "go fumt"
+
+## Example formatting
+
+Create a file with strange formatted style:
+
+```
+$ cat app.go
+package main
+
+import "fmt"
+
+func main(){
+    fmt.Println("hello")
+    }
+```
+
+After we run `go fmt` on our code, we will notice its formatted:
+
+```
+$ go fmt app.go
+app.go
+```
+
+Verify that the code was formatted:
+
+```
+$ cat app.go
+package main
+
+import "fmt"
+
+func main() {
+	fmt.Println("hello")
+}
+```
+
+To run this with a bunch of files, in the current working directory:
+
+```
+$ go fmt ./..
+```