diff --git a/README.md b/README.md
index c0d322d..20adacc 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,7 @@ pims_nd2
 
 This package lets [pims](https://github.com/soft-matter/pims) interface with the [ND2SDK](http://www.nd2sdk.com) for fast reading of Nikon *.nd2 files.
 
-This is implemented on Windows and Linux systems. An SDK for OSX is already included, this is probably easy to implement.
+This is implemented on Windows, Linux and OSX systems.
 
 Dependencies
 ------------
@@ -28,8 +28,8 @@ The best way to use the reader is using a context manager. If you do not use a c
 Metadata access can be done on two levels: reader level and frame level.
 
 	frames.metadata['mpp']  # calibration in microns per pixel
-	frames[0].metadata['t_ms']  # timestamp of image in milliseconds
+	frames[0].metadata['t_ms']  # time of frame in milliseconds
 
 Supporting Grant
 ----------------
-This reader was developed by Casper van der Wel, as part of his PhD thesis work in Daniela Kraft’s group at the Huygens-Kamerlingh-Onnes laboratory, Institute of Physics, Leiden University, The Netherlands. This work was supported by the Netherlands Organisation for Scientific Research (NWO/OCW).
+This reader was developed by Casper van der Wel, as part of his PhD thesis work in Daniela Kraft's group at the Huygens-Kamerlingh-Onnes laboratory, Institute of Physics, Leiden University, The Netherlands. This work was supported by the Netherlands Organisation for Scientific Research (NWO/OCW).
diff --git a/pims_nd2/ND2SDK.py b/pims_nd2/ND2SDK.py
index cad2313..4254024 100644
--- a/pims_nd2/ND2SDK.py
+++ b/pims_nd2/ND2SDK.py
@@ -8,8 +8,9 @@
     nd2 = cdll.LoadLibrary(os.path.join(os.path.dirname(__file__), 'ND2SDK',
                                         'linux', 'libnd2ReadSDK.so'))
 elif platform == "darwin":
-   raise OSError("Unsupported OS. The ND2SDK for OSX is included, "
-                 "please try to implement!")
+    nd2 = cdll.LoadLibrary(os.path.join(os.path.dirname(__file__), 'ND2SDK',
+                                        'osx', 'nd2sdk.framework', 'Versions',
+                                        '1', 'nd2sdk'))
 elif platform == "win32":
     bitsize = sizeof(c_void_p) * 8
     if bitsize == 32:
diff --git a/pims_nd2/ND2SDK/osx/nd2sdk.framework/Versions/1/Headers/._nd2ReadSDK.h b/pims_nd2/ND2SDK/osx/nd2sdk.framework/Versions/1/Headers/._nd2ReadSDK.h
new file mode 100644
index 0000000..14f037e
Binary files /dev/null and b/pims_nd2/ND2SDK/osx/nd2sdk.framework/Versions/1/Headers/._nd2ReadSDK.h differ
diff --git a/pims_nd2/ND2SDK/osx/nd2sdk.framework/Versions/1/nd2sdk b/pims_nd2/ND2SDK/osx/nd2sdk.framework/Versions/1/nd2sdk
index 8f79be1..da7cdf8 100644
Binary files a/pims_nd2/ND2SDK/osx/nd2sdk.framework/Versions/1/nd2sdk and b/pims_nd2/ND2SDK/osx/nd2sdk.framework/Versions/1/nd2sdk differ
diff --git a/pims_nd2/nd2reader.py b/pims_nd2/nd2reader.py
index 63be103..51a5146 100644
--- a/pims_nd2/nd2reader.py
+++ b/pims_nd2/nd2reader.py
@@ -224,6 +224,7 @@ def metadata(self):
                     'plane_count': bufmd.uiPlaneCount,
                     'angle': bufmd.dAngle,
                     'calibration_um': bufmd.dCalibration,
+                    'time_start_jdn': bufmd.dTimeStart,
                     'time_start': h.jdn_to_datetime_local(bufmd.dTimeStart),
                     'time_start_utc': h.jdn_to_datetime_utc(bufmd.dTimeStart),
                     'objective': bufmd.wszObjectiveName,
diff --git a/setup.py b/setup.py
index 0889d0c..2613023 100644
--- a/setup.py
+++ b/setup.py
@@ -15,21 +15,27 @@
 
 setup_parameters = dict(
     name="pims_nd2",
-    version="0.3",
+    version="0.4",
     description="ND2SDK wrapper for PIMS",
     author="Casper van der Wel",
     install_requires=['pims>=0.3'],
     author_email="caspervdw@gmail.com",
     url="https://github.com/soft-matter/pims_nd2",
-    download_url="https://github.com/soft-matter/pims_nd2/tarball/0.3",
+    download_url="https://github.com/soft-matter/pims_nd2/tarball/0.4",
     packages=['pims_nd2'],
     include_package_data=True,
-    platforms=[
-#        'Operating System :: MacOS :: MacOS X',
-        'Operating System :: Microsoft :: Windows :: Windows 7',
-        'Operating System :: Microsoft :: Windows :: Windows Vista',
-        'Operating System :: POSIX :: Linux',
-    ],
+    classifiers=["Development Status :: 4 - Beta",
+                 "Intended Audience :: Science/Research",
+                 "Programming Language :: C",
+                 "Programming Language :: Python",
+                 "Programming Language :: Python :: 2",
+                 "Programming Language :: Python :: 3",
+                 "Topic :: Scientific/Engineering",
+                 "Operating System :: Microsoft :: Windows",
+                 "Operating System :: POSIX",
+                 "Operating System :: Unix",
+                 "Operating System :: MacOS"],
+    platforms=['MacOS X', 'Windows', 'Linux CentOs 6.5/7', 'Linux Debian 7/8'],
     long_description=descr)
 
 setup(**setup_parameters)