DEV-3384 docs(isCapitalize):add the subject

subjects/iscapitalize/README.md

@@ -0,0 +1,42 @@
+## is-Capitalize
+
+### Instructions 
+
+- Write a function `IsCapitalize` that takes a string and returns `true` if each word in the string begins with an uppercase letter, otherwise, and returns `false`. except for the word that begins with non-alphanumerical characters.
+- If the string is empty, return `false`.
+
+### Expected function
+
+```go
+func IsCapitalize(s string) bool {
+
+}
+```
+
+### Usage
+Here is a possible program to test your function :
+
+```go
+package main
+
+import (
+	"fmt"
+)
+
+func main() {
+	fmt.Println(IsAlpha("Hello! How are you?"))
+	fmt.Println(IsAlpha("Hello How Are You"))
+	fmt.Println(IsAlpha("Whats 4this 100K?"))
+	fmt.Println(IsAlpha("Whatsthis4"))
+}
+```
+
+And its output :
+
+```console
+$ go run .
+false
+true
+true
+true
+```