Merge pull request #84 from jildertmiedema/patch-2

functions are declared in the interface, should be public

Allow for chaining - closes #74

Simpler seeJsonContains logic.

Hat tip to Taylor Otwell.

Change visibility

Continue chaining

Hunt JSON fragments a bit more effectively

Add Lumen extension

Fix url issue - closes #46

Better JSON match searching

Needs a touch of refactoring.

Update readme.md