Add README.md

Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>

README.md

@@ -0,0 +1,76 @@
+# Open CAS Framework
+
+Open CAS Framwework (OCF) is high performance block storage caching meta-library
+written in C. It's entirely platform and system independent, accessing system API
+through user provided environment wrappers layer. OCF tightly integrates with the
+rest of software stack, providing flawless, high performance, low latency caching
+utility.
+
+# In this readme:
+
+* [Documentation](#documentation)
+* [Source Code](#source)
+* [Deployment](#deployment)
+* [Unit Tests](#tests)
+* [Contributing](#contributing)
+
+<a id="documentation"></a>
+## Documentation
+
+Doxygen API documentation is available [here](http://open-cas.github.io/doxygen/ocf).  
+More documentation, tutorial and examples will be available soon.
+
+<a id="source"></a>
+## Source Code
+
+Source code is available in the official OCF GitHub repository:
+
+~~~{.sh}
+git clone https://github.com/open-cas/ocf
+cd ocf
+~~~
+
+<a id="deployment"></a>
+## Deployment
+
+OCF doesn't compile as separate library. It's designed to be included into another
+software. For this purpose OCF Makefile provides two useful targets for deploying
+OCF source into target directories. Assuming OCFDIR is ocf directory, and SRCDIR and
+INCDIR are your source and include directories, you can use following commands to
+deploy OCF into your project:
+
+~~~{.sh}
+make -C $OCFDIF src O=$SRCDIR
+make -C $OCFDIF inc O=$INCDIR
+~~~
+
+This by default will not copy OCF source files but create symbolic links to them,
+to avoid source duplication and allow for easy OCF code modification. If you prefer
+to copy OCF source files (e.g. you don't want to distribute whole OCF repository
+as your submodule), you can use following commands:
+
+~~~{.sh}
+make -C $OCFDIF src O=$SRCDIR CMD=cp
+make -C $OCFDIF inc O=$INCDIR CMD=cp
+~~~
+
+<a id="tests"></a>
+## Unit Tests
+
+OCF is shipped with dedicated unit test framework based on Cmocka.  
+To run unit test you need to install following packages:
+- Cmake (>= 3.8.1)
+- Cmocka (>= 1.1.1)
+- ctags (>= 5.8)
+
+To run unit tests use following command:
+
+~~~{.sh}
+./tests/ut-framework/run_unit_tests.py
+~~~
+
+<a id="contributing"></a>
+## Contributing
+
+Feel like making OCF better? Don't hesitate to submit a pull request!  
+In case of any questions feel free to contact [maintainer](mailto:robert.baldyga@intel.com).