Added PHP application of Bubble Sort algorithm
Switched to hash based collections, added quickcheck tests

1. Moved to hash set and hash map from tree set and tree map because it does not make sense
   that the search nodes must be ordered which is a constraint imposed by tree set and tree map.
2. Added quickcheck property based tests.
Binary Search in PHP with PHPUnit Test
Cleaned up the tests
bubble_sort in scala
Merge pull request #56 from jakobhans/php-contrib

Added PHP application of Bubble Sort algorithm
Merge pull request #57 from abhin4v/master

Enhancements and unit tests
Merge pull request #58 from mitogh/Binary_Search_PHP

Binary Search in PHP with PHPUnit Test
Merge pull request #59 from lichtsprung/master

bubble_sort in scala
Minor fix to keep the loop from going too far
Refactor of Bubble sort in php and adding some test
Added K-Means Clustering in Scala
Fixing and adding test on euclidean.php
Merge pull request #60 from jakobhans/bubble-sort-fix

Minor fix to keep the loop from going too far
Merge pull request #62 from lichtsprung/master

Add K-Means Clustering in Scala
Merge pull request #63 from mitogh/test_and_fix_euclidean_php

Fixing and adding test on euclidean.php
Merge branch 'test_buble_sort_php' of https://github.com/mitogh/Algorithm-Implementations into mitogh-test_buble_sort_php

Conflicts:
	Bubble_Sort/PHP/jakobhans/bubble_sort.php
Simplify and comment implementation of floyd warshall. Add tests for floyd warshall algorithm
Merge remote-tracking branch 'upstream/master'
Formatting change to use spaces instead of tabs