diff --git a/.gitignore b/.gitignore
index 3087c7d29..5f4020a23 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,9 @@ neatlynx/__pycache__
 .idea
 cache
 *.pyc
+
+cache
+.dvc.conf.lock
+.DS_Store
+build/
+dist/
diff --git a/README.md b/README.md
index aeb11e9ec..74b46ca37 100644
--- a/README.md
+++ b/README.md
@@ -9,3 +9,20 @@ Code and data version control for data science projects
 This project is distributed under the Apache license version 2.0 (see the LICENSE file in the project root).
 
 By submitting a pull request for this project, you agree to license your contribution under the Apache license version 2.0 to this project.
+
+
+# Development
+Create a virtualenv, for example, at `~/.environments/dvc` by `mkdir -p ~/.environments/dvc; virtualenv ~/.environments/dvc` or use `virtualenvwrapper`.
+
+```
+workon dvc
+
+pip install -r requirements.txt
+```
+
+# Building
+## OSX
+```
+# creates dist/dvc
+./build_osx.sh
+```
diff --git a/build_osx.sh b/build_osx.sh
new file mode 100755
index 000000000..4b76d309f
--- /dev/null
+++ b/build_osx.sh
@@ -0,0 +1,8 @@
+echo "building osx"
+# rm -rf build/ dist/
+pyinstaller --onefile --console \
+  --clean \
+  --noconfirm \
+  --specpath dist/ \
+  dvc2.py
+mv dist/dvc2 dist/dvc
diff --git a/dvc.conf b/dvc.conf
index e08abfe73..94afee0f5 100644
--- a/dvc.conf
+++ b/dvc.conf
@@ -4,9 +4,12 @@ CacheDir = cache
 StateDir = state
 Cloud = AWS
 
+# Log levels: Debug, Info, Warning and Error
+LogLevel = Info
+
 [AWS]
-AccessKeyId = 
-SecretAccessKey = 
+AccessKeyId =
+SecretAccessKey =
 
 StoragePath = dvc/tutorial
 
@@ -26,4 +29,4 @@ Storage = my-100gb-drive-io
 KeyDir = ~/.ssh
 KeyName = dvc-key
 
-SecurityGroup = dvc-group
+SecurityGroup = dvc-group
\ No newline at end of file
diff --git a/dvc2.py b/dvc2.py
new file mode 100755
index 000000000..cd2503002
--- /dev/null
+++ b/dvc2.py
@@ -0,0 +1,12 @@
+from __future__ import print_function
+"""
+main entry point / argument parsing for dvc
+
+NB: for ${REASONS}, cannot be named dvc.py.  trust me.
+"""
+
+from dvc import *
+
+if __name__ == '__main__':
+    print('hello, world')
+print('hello world, outside main')
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 000000000..a735c8394
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,26 @@
+appdirs==1.4.3
+appnope==0.1.0
+backports.shutil-get-terminal-size==1.0.0
+boto==2.46.1
+configparser==3.5.0
+decorator==4.0.11
+enum34==1.1.6
+fasteners==0.14.1
+ipython==5.3.0
+ipython-genutils==0.2.0
+monotonic==1.3
+nose==1.3.7
+packaging==16.8
+pathlib2==2.2.1
+pexpect==4.2.1
+pickleshare==0.7.4
+prompt-toolkit==1.0.14
+ptyprocess==0.5.1
+Pygments==2.2.0
+pyparsing==2.2.0
+requests==2.13.0
+scandir==1.5
+simplegeneric==0.8.1
+six==1.10.0
+traitlets==4.3.2
+wcwidth==0.1.7