Add freedesktop.org desktop entry and icons for UNIX systems.

added icons/hicolor/128x128/apps/stepmania-ssc.png
added icons/hicolor/16x16/apps/stepmania-ssc.png
added icons/hicolor/192x192/apps/stepmania-ssc.png
added icons/hicolor/22x22/apps/stepmania-ssc.png
added icons/hicolor/24x24/apps/stepmania-ssc.png
added icons/hicolor/256x256/apps/stepmania-ssc.png
added icons/hicolor/32x32/apps/stepmania-ssc.png
added icons/hicolor/36x36/apps/stepmania-ssc.png
added icons/hicolor/48x48/apps/stepmania-ssc.png
added icons/hicolor/64x64/apps/stepmania-ssc.png
added icons/hicolor/72x72/apps/stepmania-ssc.png
added icons/hicolor/96x96/apps/stepmania-ssc.png
added icons/hicolor/scalable/apps/stepmania-ssc.svg
added stepmania-ssc.desktop

icons/hicolor/scalable/apps/stepmania-ssc.svg

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
+<svg width="512pt" height="512pt" viewBox="0 0 512 512" version="1.1" xmlns="http://www.w3.org/2000/svg">
+<path fill="#000000" stroke="#000000" stroke-width="0.09375" opacity="0.81" d=" M 42.6 35.6 C 60.2 19.5 84.1 10.5 107.9 10.5 C 207.6 10.6 307.3 10.5 407.0 10.6 C 427.7 11.2 448.3 18.4 464.5 31.3 C 488.8 49.9 502.7 80.6 501.7 111.0 C 501.7 208.7 501.7 306.3 501.7 404.0 C 501.7 423.9 495.7 443.8 484.2 460.2 C 473.3 475.5 458.1 487.9 440.5 494.7 C 422.0 502.0 401.2 503.9 382.0 498.9 C 349.1 491.5 321.3 465.4 311.7 433.2 C 308.7 423.1 307.1 412.6 307.3 402.1 C 307.4 382.0 307.3 362.0 307.4 342.0 C 276.3 372.8 245.5 403.8 214.6 434.7 C 206.5 442.9 198.2 450.9 190.2 459.2 C 175.6 474.4 155.8 484.2 135.0 487.2 C 116.4 490.1 97.2 486.8 80.1 479.2 C 64.0 471.7 50.0 459.7 40.2 444.8 C 29.0 428.2 23.4 408.0 24.0 388.0 C 24.7 365.3 33.7 342.9 49.0 326.0 C 89.4 285.7 129.7 245.3 170.0 204.9 C 150.7 204.9 131.3 204.9 112.0 204.9 C 89.6 205.5 66.9 198.7 49.0 185.1 C 30.6 171.2 17.5 150.7 12.8 128.1 C 5.2 94.9 17.1 58.2 42.6 35.6 M 37.8 66.7 C 27.8 83.5 24.5 104.0 28.4 123.1 C 31.9 140.8 41.6 157.1 55.4 168.6 C 70.1 181.2 89.6 188.1 109.0 187.6 C 142.9 187.6 176.8 187.7 210.7 187.6 C 163.4 235.3 115.8 282.8 68.4 330.3 C 56.3 341.1 47.0 355.1 43.0 370.9 C 35.8 397.2 43.4 426.9 62.4 446.6 C 77.4 462.5 99.1 471.9 121.0 471.6 C 140.4 471.7 159.8 464.2 174.2 451.2 C 224.2 401.2 274.2 351.2 324.3 301.3 C 324.3 331.2 324.4 361.1 324.4 391.0 C 324.5 401.0 323.8 411.1 326.0 421.0 C 330.9 445.5 348.0 467.0 370.6 477.5 C 390.1 486.8 413.6 487.8 433.7 479.8 C 448.8 474.0 462.0 463.5 471.2 450.2 C 480.3 437.0 485.3 421.0 485.3 405.0 C 485.3 305.7 485.3 206.4 485.3 107.1 C 485.4 87.2 477.7 67.4 464.1 52.9 C 451.7 39.2 434.3 30.0 415.9 27.5 C 409.0 26.4 401.9 26.7 395.0 26.7 C 298.7 26.7 202.3 26.7 106.0 26.7 C 78.4 27.0 51.5 42.7 37.8 66.7 Z" />
+<path fill="#e7b212" stroke="#e7b212" stroke-width="0.09375" opacity="1.00" d=" M 37.8 66.7 C 51.5 42.7 78.4 27.0 106.0 26.7 C 202.3 26.7 298.7 26.7 395.0 26.7 C 401.9 26.7 409.0 26.4 415.9 27.5 C 434.3 30.0 451.7 39.2 464.1 52.9 C 477.7 67.4 485.4 87.2 485.3 107.1 C 485.3 206.4 485.3 305.7 485.3 405.0 C 485.3 421.0 480.3 437.0 471.2 450.2 C 462.0 463.5 448.8 474.0 433.7 479.8 C 413.6 487.8 390.1 486.8 370.6 477.5 C 348.0 467.0 330.9 445.5 326.0 421.0 C 323.8 411.1 324.5 401.0 324.4 391.0 C 324.4 361.1 324.3 331.2 324.3 301.3 C 274.2 351.2 224.2 401.2 174.2 451.2 C 159.8 464.2 140.4 471.7 121.0 471.6 C 99.1 471.9 77.4 462.5 62.4 446.6 C 43.4 426.9 35.8 397.2 43.0 370.9 C 47.0 355.1 56.3 341.1 68.4 330.3 C 115.8 282.8 163.4 235.3 210.7 187.6 C 176.8 187.7 142.9 187.6 109.0 187.6 C 89.6 188.1 70.1 181.2 55.4 168.6 C 41.6 157.1 31.9 140.8 28.4 123.1 C 24.5 104.0 27.8 83.5 37.8 66.7 Z" />
+</svg>

stepmania-ssc.desktop

@@ -0,0 +1,11 @@
+[Desktop Entry]
+Encoding=UTF-8
+Name=Stepmania-ssc
+GenericName=Rhythm and dance game
+TryExec=stepmania-ssc
+Exec=stepmania-ssc
+Terminal=false
+Icon=stepmania-ssc
+Type=Application
+Categories=Application;Game;ArcadeGame
+Comment=A cross-platform rhythm video game.