The ornamental design for an electroniccigarette, as shown and described.
FIG. 1 is a perspective view of an electronic cigarette showing our new design;
FIG. 2 is a front, bottom, right perspective view thereof;
FIG. 3 is a front elevation view thereof;
FIG. 4 is a rear elevation view thereof;
FIG. 5 is a left side view thereof;
FIG. 6 is a right side view thereof;
FIG. 7 is a top view thereof;
FIG. 8 is a bottom view thereof;
FIG. 9 is an enlarged view of portion 9 of FIG. 1; and,
FIG. 10 is an enlarged view of FIG. 7.
The broken lines consisting of evenly spaced dash lines in the drawing depict portions of the electronic cigarette that form no part of the claimed design; The broken lines consisting of short and long dash lines encircling the enlarged detail views are for annotative purposes that form no part of the claimed design.