Update Readme

README.md

@@ -1,2 +1,25 @@
 # soft-cache
-Soft cache for your class method
+Soft cache for your class methods. Sometimes your PHP application runs the same method with the same arguments during the same code execution. Better caching the output of it, especially when queryin a databse or an API.
+
+## Usage
+
+```php
+class TestClass {
+
+	use SoftCache\SoftCacheTrait;
+
+	public function getNextYearsWithCache($yearFrom, $years) {
+		if ($this->checkMethodCache(__FUNCTION__, func_get_args())) {
+			return $this->readMethodCache(__FUNCTION__, func_get_args());
+		}
+		$output = $this->getNextYearsWithoutCache($yearFrom, $years);
+		$this->writeMethodCache(__FUNCTION__, func_get_args(), $output);
+		return $output;
+	}
+
+	public function getNextYearsWithoutCache($yearFrom, $years) {
+		return range($yearFrom + 1 , $yearFrom + $years);
+	}
+
+}
+```