refactor information checking (and assorted tests)

Information checking does not need to know the underlying secret sharing
algorithm (at least for now) -- so just pass in n and k.

The test case now just creates one valid share (through RabinIDS) and
checks this until shares with a total of TEST_SIZE "unencoded" secret
data was processed.
update documentation
Merge branch 'master' of https://github.com/archistar/archistar-smc

Conflicts:
	src/main/java/at/archistar/crypto/informationchecking/InformationChecking.java
	src/main/java/at/archistar/crypto/informationchecking/RabinBenOrRSS.java
	src/test/java/at/archistar/crypto/informationchecking/PerformanceTest.java