improve documentation and fix spelling errors
use JSON capitalization consistently
SpecTransform -> SpecDriven in readme
README typo fix
Merge pull request #75 from bvtreyperry/master

README typo fix
Merge pull request #69 from norbertpotocki/documentation

Documentation improvements
Merge branch 'master' into refactor

Conflicts:
	jolt-core/src/main/java/com/bazaarvoice/jolt/Chainr.java
	jolt-core/src/main/java/com/bazaarvoice/jolt/Defaultr.java
	jolt-core/src/main/java/com/bazaarvoice/jolt/cardinality/CardinalitySpec.java