temp
Merge branch 'master' of https://github.com/AKSW/REX
Added sampling and refactored old code
new ignore *.7z
Added new algorithm for XPath generation (paper)
removed not used function and added experiments file
Merge branch 'master' of https://github.com/AKSW/REX

Conflicts:
	src/main/java/org/aksw/rex/crawler/CrawlIndex.java
	src/main/java/org/aksw/rex/crawler/SeedFetcher.java