Use new `ltc/scripts/install` script and modify wording in ltc/README
Use new `ltc/scripts/install` script and modify wording in ltc/README

[#91959138] gh-36

Signed-off-by: David Wadden <ff4ebafbe4a7d77cde45f9afefafd7a5dfa94f36@pivotal.io>

svrc-pivotal/lattice,Klaudit/lattice,davidwadden/lattice-release,davidwadden/lattice,datachand/lattice,felipeg48/lattice,datachand/lattice,SrinivasChilveri/lattice,svrc-pivotal/lattice,davidwadden/lattice-release,datachand/lattice,cloudfoundry-incubator/ltc,datachand/lattice,Klaudit/lattice,svrc-pivotal/lattice,Klaudit/lattice,svrc-pivotal/lattice,SrinivasChilveri/lattice,SrinivasChilveri/lattice,cloudfoundry-incubator/ltc,felipeg48/lattice,Klaudit/lattice,SrinivasChilveri/lattice,davidwadden/lattice