(feature) Add size() to LinkedList & test for it.

Also made a small adjustment to linkedListSpec to make the tests easier to build upon.
Merge pull request #6 from davidderiso/linkedList

(feature) Add size() to LinkedList & test for it.
[DOC] Update docs to reflect changes to linkedList
[FIX] Fix syntax in package.json
(fix) add jshintrc file for proper linting
(fix) modify test timing sensitivity to accomodate instrumentation
(feat) add coveralls support and sexy badges
(fix) reduce time expectation on tests
(fix) reduce quadtree test stringency to accomodate instrumentation
Merge pull request #7 from andrewzey/feat/coveralls-integration

Feat/coveralls integration
[DOC] Update documentation to account for Coveralls Changes
Merge branch 'master' of https://github.com/DSLibrary/dslib
Updates previous commit/pull request with the following:
-Adds count, height properties to new binary search tree instances.
-Updates insert method to check whether it should automatically rebalance upon each new node insertion.
-Updates rebalance method to operate in slightly different order to avoid infinite loops when rebuilding the tree (rebalance was being called and causing an infinite loop, as the entire left side of the tree was being built before the right side was started in the previous version).
-Updates tests to test that the rebalance function exists and that it is properly called when max height becomes greater than two times min height.