feat(sequence): for Jenkins/Tachikoma.io/CI Service(e.g. Travis-CI)

[Matt Murahashi Kenichi]

current sequence:

• load
• fetch(clean and fetch)
• [strategy]
• pull_request

new sequence

[Jenkins]:

• clean
• load
• fetch
• [strategy]
• pull_request

[Tachikoma.io]:

• clean
• preload(detect target repository information)
• fetch
• load(from fetched repository)
• [strategy]
• pull_request

[CI Service]

• (gem install tachikoma)
• load
• [strategy]
• pull_request