* Add BUILD_SHARED_LIBS option to choose between shared and static lib

* Fix build break for Android aarch64

* Install built target

* Set the correct version number

* Don't add include dirs through CFlags. Include dirs are already set as target property

* Install all relevant headers, not just from include dir

* Update note about BUILD_SHARED_LIBS in README.md

* Fix mistake in README.md, option(BUILD_SHARED_LIBS ON) sets the lib to shared by default