Added tests for number converting

public/biopet-framework/src/test/scala/nl/lumc/sasc/biopet/utils/PackageTest.scala

+package nl.lumc.sasc.biopet.utils
+
+import org.scalatest.Matchers
+import org.scalatest.testng.TestNGSuite
+import org.testng.annotations.Test
+
+import scala.util.Try
+
+/**
+ * Created by pjvan_thof on 4/14/15.
+ */
+class PackageTest extends TestNGSuite with Matchers {
+
+  @Test def testConvert: Unit = {
+    tryToParseNumber("4") shouldBe Try(4)
+    tryToParseNumber("13.37") shouldBe Try(13.37)
+    tryToParseNumber("I'm not a number") should not be Try("I'm not a number")
+
+    tryToParseNumber("4", true) shouldBe Try(4)
+    tryToParseNumber("13.37", true) shouldBe Try(13.37)
+    tryToParseNumber("I'm not a number", true) shouldBe Try("I'm not a number")
+  }
+}