add CommonRequest.header

src/main/java/com/imyeyu/network/CommonRequest.java

@@ -34,6 +34,21 @@ public class CommonRequest {
 		return this;
 	}
 
+	public CommonRequest header(String key, String value) {
+		request.addHeader(key, value);
+		return this;
+	}
+
+	public CommonRequest token(String token) {
+		request.addHeader("Token", token);
+		return this;
+	}
+
+	public CommonRequest language(String langHeader) {
+		request.addHeader("Accept-Language", langHeader);
+		return this;
+	}
+
 	public String asString() throws IOException {
 		return request.execute().returnContent().asString();
 	}