update doc on annotation usage and installation

Author: vitodegiosa

docs/content/utilities/parameters.mdx

@@ -308,4 +308,63 @@ public class AppWithAnnotation implements RequestHandler<APIGatewayProxyRequestE
     ObjectToDeserialize value;
 
 }
-```
+```
+
+### Install
+
+If you want to use the ```@Param``` annotation in your project add configuration to compile-time weave (CTW) the powertools-parameters aspects into your project.
+For more information about the annotation refer to [this section]((./parameters#Annotation))
+
+* [maven](https://maven.apache.org/):
+```xml
+<build>
+    <plugins>
+        ...
+        <plugin>
+             <groupId>org.codehaus.mojo</groupId>
+             <artifactId>aspectj-maven-plugin</artifactId>
+             <version>1.11</version>
+             <configuration>
+                 ...
+                 <aspectLibraries>
+                     ...
+                     <aspectLibrary>
+                         <groupId>software.amazon.lambda</groupId>
+                         <artifactId>powertools-parameters</artifactId>
+                     </aspectLibrary>
+                 </aspectLibraries>
+             </configuration>
+             <executions>
+                 <execution>
+                     <goals>
+                         <goal>compile</goal>
+                     </goals>
+                 </execution>
+             </executions>
+        </plugin>
+        ...
+    </plugins>
+</build>
+```
+**Note:** If you are working with lambda function on runtime post java8, please refer [issue](https://github.com/awslabs/aws-lambda-powertools-java/issues/50) for workaround
+
+* [gradle](https://gradle.org):
+```groovy
+plugins{
+    id 'java'
+    id 'aspectj.AspectjGradlePlugin' version '0.0.6'
+}
+repositories {
+    jcenter()
+}
+dependencies {
+    ...
+    implementation 'software.amazon.lambda:powertools-parameters:1.0.1'
+    aspectpath 'software.amazon.lambda:powertools-parameters:1.0.1'
+}
+```
+
+**Note:**
+
+Please add `aspectjVersion = '1.9.6'` to the `gradle.properties` file. The aspectj plugin works at the moment with gradle 5.x only if
+you are using `java 8` as runtime. Please refer to [open issue](https://github.com/awslabs/aws-lambda-powertools-java/issues/146) for more details.