Fixing a bug where .less extension is not optional with some @import statements in certain directory
structures. This fix checks if the @import statement has an extension available, if an extension is
not provided we assume the default as .less.

fix #117

Fixes #

• Did you add adequate test and make sure they pass by running npm run test
• Did you add update docs in the README.md file?

Changes proposed in this pull request:

• Instead of implying .less extension for @import statements make it the default

Steps to recreate issue:

Directory Structure:

.
├── a
│   ├── b
│   │   └── c
│   │       └── d.less
│   ├── e.less
│   └── index.less

Command:
npx less-watch-compiler ./a ./dist

index.less contains:

@import "./e";

every other file is empty