Added readme adout cmake build system using

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+Building library with CMake
+===============
+
+CDS suports both in-source and out-of-source cmake build types. Now project uses:
+
+- CMake: general cross-platform building
+- CTest: all unit tests can be run in a standard way by *ctest* command
+- CPack: for making rpm/deb/nsys etc. packages
+
+Compiling and testing
+----------
+**Building out-of-source in "RELEASE" mode ("DEBUG" is default)**
+
+- Wherever create empty directory for building, for instance *libcds-debug*  
+- Prepare: *cmake -DCMAKE_BUILD_TYPE=RELEASE <path to the project's root directory with CMakeLists.txt>*
+- Compile: *make -j4*
+- As a result you'll see shared and static cds libraries in the build directory
+
+After using command *cmake -L <path to the project's root directory with CMakeLists.txt>* one can see some additional variables, that can activate additional features:
+
+- *WITH_TESTS:BOOL=OFF*: if you want to build library with unit testing support use *-DWITH_TESTS=ON* on prepare step. Be careful with this flag, because compile time will dramatically increase
+- *WITH_BOOST_ATOMIC:BOOL=OFF*: Use boost atomics (only for boost >= 1.54)
+- ...  
+
+Packaging
+----------
+
+In order to package library *CPack* is used, command *cpack -G <Generator>* should create correspondent packages for particular operating system. Now the project supports building the following package types:
+
+- *RPM*: redhat-based linux distribs        
+- *DEB*: debian-based linux distribs
+- *TGZ*: simple "*tgz*" archive with library and headers
+- *NSYS*: windows installer package (NSYS should be installed)   
+  
+"Live" building and packaging example
+----------
+- git clone https://github.com/khizmax/libcds.git
+- mkdir libcds-release
+- cd libcds-release
+- cmake -DWITH\_TESTS=ON -DCMAKE\_BUILD_TYPE=RELEASE ../libcds
+
+    -- The C compiler identification is GNU 4.8.3
+    -- The CXX compiler identification is GNU 4.8.3
+    ...
+    -- Found Threads: TRUE
+    -- Boost version: 1.54.0
+    -- Found the following Boost libraries:
+    --   system
+    --   thread
+    Build type -- RELEASE
+    -- Configuring done
+    -- Generating done
+    -- Build files have been written to: <...>/libcds-release
+    
+- make -j4
+  
+    Scanning dependencies of target cds
+    Scanning dependencies of target test-common
+    Scanning dependencies of target cds-s
+    Scanning dependencies of target test-hdr-offsetof
+    [  1%] Building CXX object CMakeFiles/cds-s.dir/src/hp_gc.cpp.o
+    ...
+    [100%] Built target test-hdr
+    gmake: выход из каталога «/home/kel/projects_cds/libcds-debug»
+        
+- ctest
+
+    Test project /home/kel/projects_cds/libcds-debug
+        Start 1: test-hdr
+    1/7 Test #1: test-hdr .........................   Passed  1352.24 sec
+        Start 2: cdsu-misc
+    2/7 Test #2: cdsu-misc ........................   Passed    0.00 sec
+        Start 3: cdsu-map
+    ...
+    
+- cpack -G RPM
+
+    CPack: Create package using RPM
+    CPack: Install projects
+    CPack: - Run preinstall target for: cds
+    CPack: - Install project: cds
+    CPack: -   Install component: devel
+    CPack: -   Install component: lib
+    CPack: Create package
+    CPackRPM:Debug: Adding /usr/local to builtin omit list.
+    CPackRPM: Will use GENERATED spec file: /home/kel/projects_cds/libcds-debug/_CPack_Packages/Linux/RPM/SPECS/cds-devel.spec
+    CPackRPM: Will use GENERATED spec file: /home/kel/projects_cds/libcds-debug/_CPack_Packages/Linux/RPM/SPECS/cds-lib.spec
+    CPack: - package: /home/kel/projects_cds/libcds-debug/cds-2.1.0-1-devel.rpm generated.
+    CPack: - package: /home/kel/projects_cds/libcds-debug/cds-2.1.0-1-lib.rpm generated.
+  
+Future development
+----------
+- CDash: use CI system
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