Update README.md

CMakeList: make project build with MSVC

Removing pthread from TARGET_LINK_LIBRARIES of test and benchmark
subdirectories
 * makes it possible to compile the prject in MS Visual Studio
 * does not impact building with gcc

Refactor some export methods

Configured Coveralls

Configure travis-ci.org service

Update googletest and benchmark libraries, remove gcov link dependency

Linq creators

in order to build with cygwin, maybe because of new benchmark version

in order to build with cygwin, '-std=c++11' flag does not allow cygwin/mingw
compiler to use gnu (non-standard) functions, '-std=gnu++11' does

improving the performance of "take": it won't any longer iterate through...

improving the performance of "take": it won't any longer iterate through the whole sequence, only the items it needs to

Linq Creators Improvement

1) Changed the template of 'from(const TV<TT,TL> & container)' function from int to unsigned. Only this way it accepts std::array properly for me.

2) Changed return types of some 'from()' functions to auto and used decltype() to generate the type of iterator, because there is no guarantee that iterator of collection A is A::const_iterator.

3) Added two more versions of 'from()' function, which accept std::set and std::map.

Plus: Untabyfied