hello, world
mod: shorter module name
add: node and grid class
add: jasmine test framework
fix: `buildGrid` method comment
mod: build script
mod: folder name
fix: grid generation; add: grid spec
add: test for core/Grid.js; fix: core/Grid.js instance variable
assignment
add: test for method `isValidPos` in core/Grid.js
add: doc to core/Node.js
mod: doc of core/Node.js
add: doc to core/Grid.js
mod: doc to core/Grid.js
add: doc to core/BaseFinder.js
add: tests for core/BaseFinder.js
add: abstract `findPath` method to core/BaseFinder.js
mod: test names
mod: doc to testframework
mod: numCols, numRows to width and height