[#3] Manage local notifications key as unique.
[#3] Updated Demo.
[#3] Added test case for uniqueness of managing local notifications key.
[#3] Migrated test case from 'SenTestingCase' to 'XCTest'.
[#3] Updated Makefile for travis.yml.
Changed build name for test target.
Return scheduled local notification object if succeed.
Fixed travis yml format issue.
Merge pull request #4 from jarinosuke/localpush-manage-enhancement

Localpush manage enhancement