added contacts and leads, examples

examples/Contacts And Leads.md

@@ -0,0 +1,65 @@
+# Contacts And Leads Scraper With Java
+
+Allows finding email addresses, social links, phones, and other contacts from domains and URLs via the [Contacts & Leads API](https://app.outscraper.com/api-docs#tag/Email-Related/paths/~1contacts-and-leads/get).
+
+## Installation
+
+Java 11 or later
+
+### Gradle
+
+Edit your build.gradle file
+``` sh
+repositories {
+    maven { url "https://jitpack.io" }
+}
+
+dependencies {
+    implementation 'com.github.outscraper:outscraper-java:v2.1.0'
+}
+```
+
+### Maven
+
+Add the JitPack repository to your build file
+``` sh
+	<repositories>
+		<repository>
+		    <id>jitpack.io</id>
+		    <url>https://jitpack.io</url>
+		</repository>
+	</repositories>
+```
+
+Add the dependency
+``` sh
+	<dependency>
+	    <groupId>com.github.outscraper</groupId>
+	    <artifactId>outscraper-java</artifactId>
+	    <version>v2.1.0</version>
+	</dependency>
+```
+
+### Others
+
+You'll need to manually install the following JARs:
+- [The Outscraper JAR](https://jitpack.io/com/github/outscraper/outscraper-java/v2.1.0/outscraper-java-v2.1.0.jar)
+- [Json](https://repo1.maven.org/maven2/org/json/json/20090211/json-20090211.jar)
+- [Httpcomponents](https://repo1.maven.org/maven2/org/apache/httpcomponents/httpclient/4.5.13/httpclient-4.5.13.jar)
+- [Guava](https://repo1.maven.org/maven2/com/google/guava/guava/30.1.1-jre/guava-30.1.1-jre.jar)
+
+## Initialization
+```java
+OutscraperClient client = new OutscraperClient("SECRET_API_KEY");
+```
+[Link to the profile page to create the API key](https://app.outscraper.com/profile)
+
+## Usage
+
+```java
+# Search contacts and leads from a website:
+JSONArray results = client.contactsAndLeads(new HashMap<String, Object>() {{
+    put("query", "outscraper.com");
+}});
+System.out.println(results);
+```

src/main/java/OutscraperClient.java

@@ -137,6 +137,14 @@ public JSONArray googlePlayReviews(HashMap<String, Object> parameters) {
         return getData(response);
     }
 
+    public JSONArray contactsAndLeads(HashMap<String, Object> parameters) {
+        parameters.put("async", false);
+
+        JSONObject response = getAPIRequest("/contacts-and-leads", parameters);
+
+        return getData(response);
+    }
+
     public JSONArray emailsAndContacts(HashMap<String, Object> parameters) {
         parameters.put("async", false);