Merge pull request #159 from STIXProject/issue_152

fixes #152, broken Indicator=>Campaign reference
Revert "Merge pull request #159 from STIXProject/issue_152"

Should have been made to version1.1.1, not master

This reverts commit a1553426c631ac5432032879088d8c0e68fc3e1b, reversing
changes made to 5327cfb2632667019ee0684ab72215fcc261c9be.
Merge branch 'version_1.1.1', remote-tracking branch 'origin' into version_1.1.1
Merge remote-tracking branch 'origin/version_1.1.1' into version_1.1.1
Rev version in extension schemas for 1.1.1 release

- Change version attribute on the root “xs:schema” element to 1.x.1
- Change <version> annotation inside the “xs:appinfo” element to 1.x.1
- <date> annotation inside the “xsi:appinfo” element to 5/1/14
Merge branch 'Sample-changes-for-1.1.1' into version_1.1.1
Merge branch 'version_1.1.1' of https://github.com/STIXProject/schemas.git into version_1.1.1
Merge branch 'master' of https://github.com/STIXProject/schemas.git into version_1.1.1
Revert "Merge branch 'master' of https://github.com/STIXProject/schemas.git i…
into version_1.1.1

Merged change from master into 1.1.1 by mistake

Reverses commit ddccb275ce7702f70c6d2c90469a6a5f741faa20
Merge remote-tracking branch 'origin/version_1.1.1' into version_1.1.1
Merge branch 'version_1.1.1' into Sample-changes-for-1.1.1
Added a missing namespace