lib/locate-file.js
function resolveRelative(base, filePath) {
	return getBasePath(base)
	.then(basePath => tryFile(path.resolve(basePath, filePath)));
}
function resolveRelative(base, filePath) {
	return getBasePath(base)
	.then(basePath => tryFile(path.resolve(basePath, filePath)));
}
function resolveRelative ( base , filePath ) { return getBasePath ( base ) . then ( basePath => tryFile ( path . resolve ( basePath , filePath ) ) ) ; }
Resolves relative file path
@param  {TextEditor|String} base
@param  {String}            filePath
@return {Promise}
Resolves relative file path