Remove references to "latest version" of Node
Remove references to "latest version" of Node

The latest version of Node will change frequently. Rather than having to update this documentation every time it changes, we can just explain that the kit works with any version since 4.3.0.
DilwoarH/GDS-Prototype-DM-SavedSearch,abbott567/govuk_prototype_kit,gup-dwp/pip-prototype-v2,danblundell/verify-local-patterns,tsmorgan/marx,Demwunz/esif-prototype,BucksCountyCouncil/verify-local-patterns,paulpod/invgov,arminio/govuk_prototype_kit,nhsbsa/ppc-prototype,OrcaTom/dwp_contentpatterns,paulpod/invgov,benjeffreys/hmcts-idam-proto,alphagov/govuk_prototype_kit,arminio/govuk_prototype_kit,gup-dwp/pip-prototype-v2,hannalaakso/accessible-timeout-warning,davedark/proto-timeline,quis/notify-public-research-prototype,karlparton/my-govuk,joelanman/govuk_prototype_kit,chrishanes/pvb_prisoner_proto,joelanman/govuk_prototype_kit,kenmaddison-scc/verify-local-patterns,OrcaTom/dwp_contentpatterns,danblundell/verify-local-patterns,paulpod/invgov,nhsbsa/ppc-prototype,dwpdigitaltech/hrt-prototype,companieshouse/ch-accounts-prototype,DilwoarH/GDS-Prototype-DM-SavedSearch,alphagov/govuk_prototype_kit,arminio/govuk_prototype_kit,tsmorgan/marx,dwpdigitaltech/digital-debt,joelanman/govuk_prototype_kit,kenmaddison-scc/verify-local-patterns,Demwunz/esif-prototype,BucksCountyCouncil/verify-local-patterns,gavinwye/govuk_prototype_kit,benjeffreys/hmcts-idam-proto,chrishanes/pvb_prisoner_proto,nhsbsa/ppc-prototype,alphagov/govuk_prototype_kit,karlparton/my-govuk,abbott567/govuk_prototype_kit,danblundell/verify-local-patterns,gup-dwp/pip-prototype-v2,kenmaddison-scc/verify-local-patterns,chrishanes/pvb_prisoner_proto,quis/notify-public-research-prototype,dwpdigitaltech/ejs-prototype,dwpdigitaltech/digital-debt,quis/notify-public-research-prototype,Demwunz/esif-prototype,OrcaTom/dwp_contentpatterns,benjeffreys/hmcts-idam-proto,tsmorgan/marx,hannalaakso/accessible-timeout-warning,gavinwye/govuk_prototype_kit,dwpdigitaltech/hrt-prototype,abbott567/govuk_prototype_kit,dwpdigitaltech/ejs-prototype,samwake/hoddat-cofc-caseworking,karlparton/my-govuk,samwake/hoddat-cofc-caseworking,davedark/proto-timeline,samwake/hoddat-cofc-caseworking,DilwoarH/GDS-Prototype-DM-SavedSearch,dwpdigitaltech/ejs-prototype,dwpdigitaltech/hrt-prototype,davedark/proto-timeline,dwpdigitaltech/digital-debt,BucksCountyCouncil/verify-local-patterns,companieshouse/ch-accounts-prototype,hannalaakso/accessible-timeout-warning