add some test and update documentation

Author: sapher

README.md

@@ -2,7 +2,7 @@
 
 A simple java wrapper for [youtube-dl](https://github.com/rg3/youtube-dl) executable
 
-There's a lot of thing left to do. Parsing output is one of them. Too bad, youtube-dl output unform
+There's a lot of thing left to do. Parsing output is one of them. Too bad, youtube-dl doesn't output formatted data.
 
 # Prerequisite
 
@@ -16,6 +16,28 @@ You can use jitpack.io to add the library to your project.
 
 [youtube-dl](https://jitpack.io/#sapher/youtubedl-java)
 
+### Gradle
+
+*Step 1 :* Add jitpack repository to your build file
+
+```
+allprojects {
+    repositories {
+        maven { url 'https://jitpack.io' }
+    }
+}
+```
+
+*Step 2:* Add the dependency
+
+```
+dependencies {
+    compile 'com.github.sapher:youtubedl-java:1.+'
+}
+```
+
+### Maven
+
 ## Make request
 
 ```java

src/main/java/com/sapher/youtubedl/YoutubeDL.java

@@ -51,11 +51,10 @@ public static YoutubeDLResponse execute(YoutubeDLRequest request) throws Youtube
         YoutubeDLResponse youtubeDLResponse;
         Process process;
         int exitCode;
-        StringBuffer outBuffer = new StringBuffer();
-        StringBuffer errBuffer = new StringBuffer();
+        StringBuffer outBuffer = new StringBuffer(); //stdout
+        StringBuffer errBuffer = new StringBuffer(); //stderr
         long startTime = System.nanoTime();
 
-        // TODO A nice place to break everything
         String[] split = command.split(" ");
 
         ProcessBuilder processBuilder = new ProcessBuilder(split);
@@ -184,7 +183,6 @@ public static List<String> getTags(String url) throws YoutubeDLException {
     /**
      * Get command executable or path to the executable
      * @return path string
-     * @throws YoutubeDLException
      */
     public static String getExecutablePath(){
         return executablePath;
@@ -193,7 +191,6 @@ public static String getExecutablePath(){
     /**
      * Set path to use for the command
      * @param path String path to the executable
-     * @throws YoutubeDLException
      */
     public static void setExecutablePath(String path){
         executablePath = path;

src/test/java/com/sapher/youtubedl/YoutubeDLTest.java

@@ -14,6 +14,12 @@ public class YoutubeDLTest {
     private final String directory = System.getProperty("java.io.tmpdir");
     private final String videoUrl = "https://www.youtube.com/watch?v=dQw4w9WgXcQ";
 
+    @Test
+    public void testUsingOwnExecutablePath() throws YoutubeDLException {
+        YoutubeDL.setExecutablePath("/usr/bin/youtube-dl");
+        Assert.assertNotNull(YoutubeDL.getVersion());
+    }
+
     @Test
     public void testGetVersion() throws YoutubeDLException {
         Assert.assertNotNull(YoutubeDL.getVersion());