Add main.rs to run all solutions and update README.md.

README.md

@@ -1,55 +1,47 @@
 ```
 Advent of code 2020
 Day 1 - Part 1: 1016964
-	generator: 12.62µs,
-	runner: 393ns
+	generator: 19.462µs,
+	runner: 638ns
 
 Day 1 - Part 2: 182588480
-	generator: 9.091µs,
-	runner: 283ns
+	generator: 13.395µs,
+	runner: 397ns
 
 Day 2 - Part 1: 586
-	generator: 93ns,
-	runner: 118.687µs
+	generator: 133ns,
+	runner: 143.612µs
 
 Day 2 - Part 2: 352
-	generator: 93ns,
-	runner: 66.671µs
+	generator: 182ns,
+	runner: 128.948µs
 
 Day 3 - Part 1: 265
-	generator: 46.978µs,
-	runner: 76.79µs
+	generator: 70.461µs,
+	runner: 74.25µs
 
 Day 3 - Part 2: 3154761400
-	generator: 36.439µs,
-	runner: 255.909µs
+	generator: 59.863µs,
+	runner: 398.929µs
 
 Day 4 - Part 2: 186
-	generator: 103ns,
-	runner: 99.999µs
+	generator: 133ns,
+	runner: 156.514µs
 
 Day 5 - Part 1: SeatId(933)
-	generator: 90ns,
-	runner: 40.693µs
+	generator: 194ns,
+	runner: 62.802µs
 
 Day 5 - Part 2: SeatId(711)
-	generator: 91ns,
-	runner: 99.892µs
+	generator: 159ns,
+	runner: 70.564µs
 
 Day 6 - Part 1: 6633
-	generator: 103ns,
-	runner: 132.245µs
+	generator: 158ns,
+	runner: 162.734µs
 
 Day 6 - Part 2: 3202
-	generator: 93ns,
-	runner: 158.61µs
-
-Day 7 - Part 1: 208
-	generator: 83ns,
-	runner: 582.017µs
-
-Day 7 - Part 2: 1664
-	generator: 106ns,
-	runner: 694.197µs
+	generator: 116ns,
+	runner: 138.78µs
 
 ```