Fix travis (close #197)

scripts/travis_test_embark.sh

@@ -6,8 +6,10 @@ mkdir test_embark
 cd test_embark
 
 curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.34.0/install.sh | bash
+source ~/.nvm/nvm.sh
 nvm install --lts
 nvm use --lts
+npm --version
 
 npm install -g embark
 embark demo

scripts/travis_test_truffle.sh

@@ -6,6 +6,7 @@ mkdir test_truffle
 cd test_truffle
 
 curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.34.0/install.sh | bash
+source ~/.nvm/nvm.sh
 nvm install --lts
 nvm use --lts
 
@@ -13,7 +14,7 @@ npm install -g truffle
 truffle unbox metacoin
 slither .
 
-if [ $? -eq 8 ]
+if [ $? -eq 7 ]
 then  
     exit 0
 fi