614. In any action under this Chapter, whether it be instituted by a husband or a wife, the wife may present a petition for alimony pending the action. Such petition shall be preferred and dealt with as of summary procedure, and the husband shall be made respondent therein ; and the court, on being satisfied of the truth of the statements therein contained, may make such order on the husband for payment to the wife of alimony pending the action as it may deem just:Provided that alimony pending the action shall in no case be less than one-fifth of the husband's average net income for the three years next preceding the date of the order, and shall continue, in case of a decree for dissolution of marriage or of nullity of marriage, until the decree is made absolute or is confirmed, as the case may be.