init simplejson.go
add simplejson.go of version 0.1
add .travis.yml
failed type assertion returns correct zero value
Merge pull request #1 from W4RH4WK/fix_type_assertion

failed type assertion returns correct zero value
Thanks W4RH4WK
Added Exists method to Json struct as defined in likexian/simplejson issue #2
Added test cases for new Exists() method, also gofmt'd simplejson.go & simplejson_test.go
Merge pull request #4 from jsimnz/feat/exists

Added Exists() method as per issue #2 on likexian/simplejson
change \t to 4 spaces
update README