Custom splitter in input allowed and tested
Merge branch 'master' of github.com:helgib10/StringCalculator
java-util import
Merge branch 'master' of github.com:helgib10/StringCalculator
import Lambdaj
Merge branch 'master' of github.com:helgib10/StringCalculator
Now the calculator does not accept negative numbers
one file left behind
Test for multiple negative numbers with the right message created
Test to handle big integers writen
minor bug in test 9 fixed and calculator edited to satisfy the test
test case 10 satisfied with if statement