website: Hard wrap intro/architecture files, update intro

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Signed-off-by: Jonathan Rudenberg <jonathan@titanous.com>
website: Remove references to “The Grid”

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Signed-off-by: Jonathan Rudenberg <jonathan@titanous.com>
website: Update architecture page

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Signed-off-by: Jonathan Rudenberg <jonathan@titanous.com>
all: README updates

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Signed-off-by: Jonathan Rudenberg <jonathan@titanous.com>
script: Remove outdated build-flynn script

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Signed-off-by: Jonathan Rudenberg <jonathan@titanous.com>