ref(Readme): Add example to readme

Author: RomanSoloweow

README.md

@@ -7,6 +7,39 @@ StructuralSearch - An easy-to-use library for structural search and replace in t
 ## Give a Star! :star:
 If you like or are using this project please give it a star. Thanks!
 
+# Why SimpleStateMachine?
+**Forget** about regular expressions and **enjoy searching**
+
+1. Describe search pattern:
+```C#
+// Just text and placeholders
+var template = StructuralSearch.ParseFindTemplate("void $methodName$($params$)")
+```
+2. Find it in any text:
+```C#
+// All the matches are already here
+var results = template.ParseString("void MyMethodName(int value1, double value2)"
+``` 
+3. Enjoy the search results
+```C#
+// The found text part
+parseResult.Match.Value // void MyMethodName(int value1, double value2)
+
+// The exact coordinates of the match
+parseResult.Match.Columnt // Start 1, End 45
+parseResult.Match.Line // Start 1, End 1
+parseResult.Match.Offset // Start 0, End 44
+    
+// Placeholders
+parseResult.Placeholders // { "methodName" : "MyMethodName" }, { "params": "int value1, double value2" }
+    
+// The exact coordinates of each placeceholdder
+parseResult.Placeholders[0].Column // Start 6, End 18
+parseResult.Placeholders[0].Line // Start 1, End 1
+parseResult.Placeholders[0].Offset // Start 5, End 17
+
+```
+
 ## Getting Started📂
 Install from Nuget:
 ```sh