Update README.md

Author: PauloPenalva

README.md

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 # Java-MDFe [![MIT License](https://img.shields.io/github/license/PauloPenalva/Java_MDFe.svg) ](https://github.com/PauloPenalva/Java_MDFe/blob/master/LICENSE) 
 Biblioteca Java para consumo do WebService de MDF-e, baseada no projeto (https://github.com/Samuel-Oliveira/Java_NFe)
+
+Para Iniciar : 
+- Baixe o Schemas.rar (https://github.com/Samuel-Oliveira/Java_NFe/raw/master/schemas.zip) e extraia na sua Máquina.
+
+- External Jar: Baixe e adicione às bibliotecas de seu Projeto.
+  - https://github.com/PauloPenalva/Java_MDFe/releases
+
+- Maven :
+```xml
+<dependency>
+  <groupId>br.com.idxtec</groupId>
+  <artifactId>java_mdfe</artifactId>
+  <version>3.0</version>
+</dependency>
+```