win/remaken-1.6.0

Update builddefs-qmake to v4.4.0

Update README.md
feat: iprove package installed detection
feat: add remaken install script for linux / mac os X
feat[init command]: use builddefs-qmake-latest package to initialize qmake rules
feat: add a check whether a dependency is available in remaken packages path, prior to try to download it. When the dependency is available, no download occur. feat[conan cache]: add build configuration with conan dependencies in cache file to allow several builds of the same dependency depending on os, cpp version, architecture ...
feat[arch]: add architecture values for android feat[conan]: forward arch to conan
Update remaken version to 1.6.0
feat[conan options]: forward tool options to conan install and bundle (already done for bundle command)
fix: handle properly symlinks (boost::filesystem::is_symlink is corrupted) and shared libraries extensions on linux with .so.x.y.z
feat[init]: create profiles folder
feat: remove builddefs/qmake and REMAKEN_RULES_ROOT in windows setup
feat[init command]: add init command to create .remaken/rules folder and populate .remaken/rules/qmake from latest builddefs-qmake release
fix: set environment in each dedicated matrix job
fix: set complete image name
fix[syntax]: rename init_script to init
fix[syntax]: remove duplicate key
feat[CI]: add appveyor.yml configuration file