Added Alicloud provider and multiple services

[Ghost---Shadow]

I have added ECS (EC2) service for alicloud platform. If things are looking good then I will start mass producing other services.

#170

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[Ghost---Shadow]

@googlebot I signed it!

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[sergeylanzman]

Good job!!!
3 comments:

1. Please https://github.com/aliyun/alibaba-cloud-sdk-go instance provider, more light import
2. You can use ID with name of instance
3. Delete unused functions

[sergeylanzman]

Tell me ping, when you finished this PR.

[Ghost---Shadow]

@sergeylanzman I have updated the README.md it is ready for merge.

[sergeylanzman]

@Ghost---Shadow
Thank for your contribution!
I will check after option don't import all AliCloud provider, but for now it's ok.