Added instructions on building stand-alone Mac OS X binary

- Build occurs inside a virtualenv
- Added new icon
- Updated README.md and Icon GPL Attribution

README.rst

@@ -84,6 +84,22 @@ Python 3 + Qt5 (Works on macOS High Sierra)
     python labelImg.py
     python  labelImg.py [IMAGE_PATH] [PRE-DEFINED CLASS FILE]
 
+*NEW* Python 3 Virtualenv + Binary
+This avoids a lot of the QT / Python version issues,
+and gives you a nice .app file with a new SVG Icon
+in your /Applications folder.
+
+.. code::
+    
+    brew install python3
+    pip install pipenv
+    pipenv --three
+    pipenv shell
+    pip install pyqt5 lxml
+    make qt5py3
+    rm -rf build dist
+    python setup.py py2app
+    cp -rf dist/labelImg.app /Applications
 
 Windows
 ^^^^^^^
@@ -239,3 +255,5 @@ Related
    download image, create a label text for machine learning, etc
 2. `Use Docker to run labelImg <https://hub.docker.com/r/tzutalin/py2qt4>`__
 3. `Generating the PASCAL VOC TFRecord files <https://github.com/tensorflow/models/blob/4f32535fe7040bb1e429ad0e3c948a492a89482d/research/object_detection/g3doc/preparing_inputs.md#generating-the-pascal-voc-tfrecord-files>`__
+4. `App Icon based on Icon by Nick Roach (GPL)` <https://www.elegantthemes.com/> <https://www.iconfinder.com/icons/1054978/shop_tag_icon> __
+

resources.qrc

@@ -2,7 +2,7 @@
 <qresource>
 
 <file alias="help">icons/help.png</file>
-<file alias="app">icons/expert2.png</file>
+<file alias="app">icons/app.png</file>
 <file alias="expert">icons/expert2.png</file>
 <file alias="done">icons/done.png</file>
 <file alias="file">icons/file.png</file>

setup.py

@@ -17,7 +17,14 @@
 required_packages = find_packages()
 required_packages.append('labelImg')
 
+APP = ['labelImg.py']
+OPTIONS = {
+    'argv_emulation': True,
+    'iconfile': 'icons/app.icns'
+}
+
 setup(
+    app=APP,
     name='labelImg',
     version=__version__,
     description="LabelImg is a graphical image annotation tool and label object bounding boxes in images",
@@ -51,5 +58,7 @@
         'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',
     ],
-    package_data={'data/predefined_classes.txt': ['data/predefined_classes.txt']}
+    package_data={'data/predefined_classes.txt': ['data/predefined_classes.txt']},
+    options={'py2app': OPTIONS},
+    setup_requires=['py2app']
 )