core/alphabetDirectories.js: Created getAlphabetFsStructure function
test/core/pathGatherer.test.js: Improved description of test
test/utils.js: Created test/utils module
test/core/alphabetDirectories.test.js: Wrote tests for test/core/alphabetDirectories module
test/core/pathGatherer.test.js: Removed dots from test description
test/core/alphabetDirectories.test.js: Restored state of stubbed function that affected other tests
test/core/pathGatherer.test.js: Removed unused code
package.json: Added command to run all tests
test/core/: Improved console output layout
Created travis script