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