Added a test for running the lzma program that is not under PATH
Fixed the running an lzma program that is not under PATH
Merge pull request #65 from alquerci/fixed-lzma-program-path

Fixed the running a lzma program that is not under PATH
Fixed AppVeyor configuration to speed up the build process

* AppVeyor build only on 64 Bits OS

* Use the installed appveyor git