Removed obsolete (and thus unused) methods
Incorporated code review feedbacks

1. Setter of Version property of the Service class should be private. A
couple of other properties should be internal.

2. 'map' var in examples should be changed to 'event'

3. Change to XML result reader in examples to avoid third party library
dependency.
Removed another obsolete (thus unused) method
Misc changed for Beta release

1. Upgraded to Json.Net release 11
2. Changed assembly version and file version to 0.8.0.0
3. Updated CHANGELOG.md for the release
Using assembly file version attribute in UserAgent

This is to avoid having version numbers in two places.
Merge pull request #20 from splunk/develop

Release 0.8