added more screenshots and put them into apps.json

apps.json

@@ -175,6 +175,7 @@
     "version": "0.13",
     "description": "Appears at first boot and explains how to use Bangle.js",
     "icon": "app.png",
+    "screenshots": [{"url":"screenshot_welcome.png"}],
     "tags": "start,welcome",
     "supports": ["BANGLEJS","BANGLEJS2"],
     "allow_emulator": true,
@@ -279,6 +280,7 @@
     "version": "0.03",
     "description": "Display Time as Text",
     "icon": "clock-word.png",
+    "screenshots": [{"url":"screenshot_word.png"}],
     "type": "clock",
     "tags": "clock",
     "supports": ["BANGLEJS","BANGLEJS2"],
@@ -1090,6 +1092,7 @@
     "version": "0.07",
     "description": "A Simple Digital Clock",
     "icon": "clock-simple.png",
+    "screenshots": [{"url":"screenshot_simplec.png"}],
     "type": "clock",
     "tags": "clock",
     "supports": ["BANGLEJS","BANGLEJS2"],
@@ -1610,6 +1613,7 @@
     "version": "0.14",
     "description": "Simple CLI-Styled Clock",
     "icon": "app.png",
+    "screenshots": [{"url":"screenshot_cli.png"}],
     "type": "clock",
     "tags": "clock,cli,command,bash,shell",
     "supports": ["BANGLEJS","BANGLEJS2"],
@@ -1982,6 +1986,7 @@
     "version": "0.04",
     "description": "Basic calculator reminiscent of MacOs's one. Handy for small calculus.",
     "icon": "calculator.png",
+    "screenshots": [{"url":"screenshot_calculator.png"}],
     "tags": "app,tool",
     "supports": ["BANGLEJS","BANGLEJS2"],
     "storage": [
@@ -2223,6 +2228,7 @@
     "version": "0.02",
     "description": "Simple calendar",
     "icon": "calendar.png",
+    "screenshots": [{"url":"screenshot_calendar.png"}],
     "tags": "calendar",
     "supports": ["BANGLEJS","BANGLEJS2"],
     "readme": "README.md",
@@ -2371,6 +2377,7 @@
     "version": "0.02",
     "description": "A clock for time travellers. The light pie segment shows the minutes, the black circle, the hour. The dial itself reads 'time' just in case you forget.",
     "icon": "gallifr.png",
+    "screenshots": [{"url":"screenshot_time.png"}],
     "type": "clock",
     "tags": "clock",
     "supports": ["BANGLEJS","BANGLEJS2"],
@@ -2873,6 +2880,7 @@
     "version": "0.05",
     "description": "Current time zone plus up to four others",
     "icon": "app.png",
+    "screenshots": [{"url":"screenshot_world.png"}],
     "type": "clock",
     "tags": "clock",
     "supports": ["BANGLEJS","BANGLEJS2"],
@@ -3559,6 +3567,7 @@
     "version": "0.03",
     "description": "The simplest working clock, acts as a tutorial piece",
     "icon": "simplest.png",
+    "screenshots": [{"url":"screenshot_simplest.png"}],
     "type": "clock",
     "tags": "clock",
     "supports": ["BANGLEJS","BANGLEJS2"],
@@ -3968,6 +3977,7 @@
     "version": "0.05",
     "description": "A Configurable clock with custom fonts and background",
     "icon": "pastel.png",
+    "screenshots": [{"url":"screenshot_pastel.png"}],
     "type": "clock",
     "tags": "clock",
     "supports": ["BANGLEJS","BANGLEJS2"],
@@ -4005,7 +4015,6 @@
     "type": "clock",
     "tags": "clock",
     "supports": ["BANGLEJS","BANGLEJS2"],
-    "readme": "README.md",
     "allow_emulator": true,
     "storage": [
       {"name":"waveclk.app.js","url":"app.js"},
@@ -4022,7 +4031,6 @@
     "type": "clock",
     "tags": "clock",
     "supports": ["BANGLEJS","BANGLEJS2"],
-    "readme": "README.md",
     "allow_emulator": true,
     "storage": [
       {"name":"floralclk.app.js","url":"app.js"},
@@ -4039,7 +4047,6 @@
     "type": "app",
     "tags": "",
     "supports": ["BANGLEJS","BANGLEJS2"],
-    "readme": "README.md",
     "storage": [
       {"name":"score.app.js","url":"score.app.js"},
       {"name":"score.settings.js","url":"score.settings.js"},