Added code and unit tests on sample data

* Parsing two sql dump files - sk wiki langlinks and sk titles with ids
* Code searches for HU links and matches its titles with sk titles
* Using hashmap to store id and title
* 2 10k line files; code runtime less than a second for these sample
* 2 primitive unit tests: test if an output file is correctly generated
* and if structure looks valid
Added code to get statistics from langlink matches

* New classes added - matching langlinks using hashmaps and stats on the
* output data;
* Unit test updated - test file added with some manually written matches
* to test if these are contained in the program output;
* Wiki homepage updated;
* Code runnable on sk->hu and sk->en matches, does the reverse linking at
* the same time;
* Stats run on the generated output data and write into a new file the
* missing pairs (those that are in sk->en but not in en->sk, or vice versa)
Added and updated final code as well as README file

* main argument needed - path to the folder data without "/"
* preprocessing class also added and included in code runtime
* unless user runs only the sample data which is already preprocessed
* whether he runs sample or whole data set and hu or en language it is
* decided at runtime by the user
* for further info, check readme and wiki homepage
Merge pull request #109 from DanielSoos/develop

Added final code containig readme too