Merge pull request #1 from annexare/es6

ES6 class, unit tests + code coverage, extraction, Zip instead of 7z

Author: dmythro

.gitignore

@@ -31,3 +31,7 @@ node_modules
 
 # Optional REPL history
 .node_repl_history
+
+# Test DMG or ZIP files
+tests/*.dmg
+tests/*.zip

.npmignore

@@ -0,0 +1 @@
+tests

7z/7za.dll

@@ -21,7 +21,9 @@ let dir = 'some/test/dir';
 Pack.param('dmg', /osx/);
 
 // Pack the directory
-Pack.path(dir);
+let zip = Pack.path(dir);
+// Extract to directory
+Pack.extract(zip, dir);
 ```
 
 ### Parameters
@@ -37,8 +39,10 @@ Created by [Annexare Studio](https://annexare.com/).
 Feel free to use it as you need in your apps or send updates into [this](https://github.com/annexare/PackDir) public repository.
 All code is under MIT license.
 
-## 7-Zip
+## Zip/UnZip for Windows
 
-For Windows host [7-Zip](http://www.7-zip.org/) standalone console app is used
-(~1MB, doesn't require installation).
-All license files are included with it, with respect to the author (Igor Pavlov).
+For Windows host
+[Zip](http://gnuwin32.sourceforge.net/packages/zip.htm)/
+[UnZip](http://gnuwin32.sourceforge.net/packages/unzip.htm)
+standalone console apps are used
+(~800kB, doesn't require installation, bundled with the package).