added Mongolian Tugrik

[The-White-Fang]

No description provided.

[paul-shuvo]

Could you add a test for MNT in the test file like the following:

    describe("rates", () =>  {
        it("should not return undefined values", () => {
            currencyConverter.from("USD").to("JPY")
            return expect(currencyConverter.rates()).to.eventually.not.equal(undefined)
        })

        it("should not return undefined values for CF", () => {
            currencyConverter.from("CF").to("JPY")
            return expect(currencyConverter.rates()).to.eventually.not.equal(undefined)
        })

        it("should not return undefined values for CHF", () => {
            currencyConverter.from("USD").to("CHF")
            return expect(currencyConverter.rates()).to.eventually.not.equal(undefined)
        })

        it("should not return undefined values for KMF", () => {
            currencyConverter.from("KMF").to("USD")
            return expect(currencyConverter.rates()).to.eventually.not.equal(undefined)
        })

        it("should not return undefined values when isDecimalComma is true", () => {
            currencyConverter.from("USD").to("JPY").setDecimalComma(true)
            return expect(currencyConverter.rates()).to.eventually.not.equal(undefined)
        })
    })

[The-White-Fang]

Will do.