.bem/conf renamed to .bem/configs
Use BEMHTML_ENV=development for dev-mode
Use vendor dir for external libraries
Using configs dir within environ settigs; Arch-node pre-patching is moved to .bem/nodes/arch
Use pre-pathed Arch node for project's make.js configuration
Use vendor dir within build process
gitignore fixed
Merge branch 'feature-environ'
Duplicate code removed from configs