Could not get script via 'curl -vsS https://raw.githubusercontent.com/hyperledger/fabric/master/scripts/bootstrap.sh | bash'

[lyp830414]

Issue description
As curl could not support https( unless user try to manually compile and install curl code with enable 'https' feature )

Then it failed after I tried ‘ curl -vsS https://raw.githubusercontent.com/hyperledger/fabric/master/scripts/bootstrap.sh | bash’, shown as following figure.

I haven't found a good way about how to download the script automatically, so I did it by manual :-)

Proposal
Shall we notice user to do it by manual in README? Or any approach the way to download & operate it .

[SamYuan1990]

@lyp830414 , could you please fix this bug via pr?
in fact, the shell script is https://github.com/hyperledger/fabric/blob/master/scripts/bootstrap.sh
or we can modify the document with download
https://github.com/hyperledger/fabric/blob/master/scripts/bootstrap.sh and run?