update redis-plus-plus version to 1.3.0

Rewrite CMakeLists.txt with modern cmake (sewenew#188)

update README

fix msvc2015 problem

TLS error messages improved (sewenew#93)

* Fix typos

* Improve errors during TLS initialization

cmake: append to CMAKE_CXX_FLAGS instead of overwriting it (sewenew#68)

cmake: append to CMAKE_CXX_FLAGS instead of overwriting it (sewenew#68): addresses sewenew#67

update README

update README for stream commands

fix invalid command options for test program

update the doc