Release 0.2.0

• packages (c8732e2)
• [example] rnn-screens 0.2.0 (0d82cca)
• Update README.md (e5a913a)
• Update README.md (8cd1ae1)
• Update README.md (fc86f49)
• Update README.md (96061e7)
• Update README.md (7556617)
• Update index.js (eb1fec1)
• 2 screens and navigation between them (c35dae8)
• minimal setup (538a67b)
• ScreenComponent (40e437a)
• [example] react-native-navigation & rnn-screens added (e2ea741)
• [android] example setup (89843c4)
• [ios] example setup (c293e80)
• ignore _media folder (1d83119)
• [ts] exclude "example" folder (0756201)
• [type] ScreenComponent added (abd2888)
• example added (cda7724)
• remove RootScreen (950035a)
• better logic for screens register (a444048)
• warn when get (63a8829)
• merge (9e8fafa)
• registerRootComponent added (235d043)
• Screen and RootScreen added (4dc91d5)
• Update package.json (5d23724)
• better logic for constants (a3c710c)
• release script added (d874149)
• Update README.md (3c6d28c)