0.7.7: Fix formatting in installation section of README

Corrected formatting and spacing in the README for installation instructions.

0.7.6: Bring the bar back when the QR card closes by its own buttons

hideOverlay does not send overlay.closed, so closing the card with
the Close button or a tap on the dimmed area left the bar hidden
forever. closeCode now rebuilds it directly, and a failed card
show also restores the bar instead of leaving nothing on screen.

0.7.5: Add the plugin icon

A 256 by 256 icon.png under assets/: a scannable QR of the plugin's
repository URL on a white card over a KS blue rounded gradient, with
the navbar-style amber chevron at its corner.

0.7.4: Optional edge snapping: Docking becomes Edge or Free

Edge keeps the navbar model, redocking on the frame edge nearest
the release. Free floats the bar anywhere and a drag leaves it
exactly where it is dropped, its center persisted. The settings
show only the fields of the chosen mode.

0.7.3: Dock the bar on a frame edge like the navbar; fix the dead drop

The drag never rebuilt anything: the touch listener cleared the
dragging flag before calling dropBar, so the drop returned at once
and left the ghost handle up and the bar invisible. The bar now
docks like the navbar instead of floating: a release redocks it
flush with the frame edge nearest the drop, edge and along-edge
position persisted, chevron pointing in from that edge.

0.7.2: Anchored bars never drag; a dropped bar takes taps where it is drawn

The touch stream now ignores moves entirely while placement is
Anchored, so an anchored bar stays on its corner. On drop the bar is
rebuilt immediately, without transitions: the old transparent view
at the old spot used to live through the exit fade and keep taking
taps there, leaving the QR click point behind.

0.7.1: Fix the crash: FrameLayout children need FrameLayout params

The bar's icons are children of the indicator FrameLayout, but the
restyle assigned them LinearLayout.LayoutParams. The first layout
pass threw ClassCastException inside FrameLayout.checkLayoutParams,
which Kiosk Satellite reaches right after create, crashing the app.