almost fill readme and add samples

sample/.env

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+DATA_PATH=.
+
+PG_USER=test_user
+PG_PASSWORD=test_password
+PG_DB=test_db

sample/config.json

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+{
+  "database": {
+    "url": "jdbc:postgresql://postgres/test_db",
+    "username": "test_user",
+    "password": "test_password",
+    "driver": "org.postgresql.Driver"
+  },
+  "botToken": "1234567890:ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghi",
+  "plugins": [
+    "dev.inmo.plaguposter.posts.Plugin",
+    "dev.inmo.plaguposter.posts.registrar.Plugin",
+    "dev.inmo.plaguposter.ratings.Plugin",
+    "dev.inmo.plaguposter.ratings.source.Plugin",
+    "dev.inmo.plaguposter.ratings.selector.Plugin",
+    "dev.inmo.plaguposter.triggers.selector_with_timer.Plugin",
+    "dev.inmo.plaguposter.ratings.gc.Plugin",
+    "dev.inmo.plaguposter.inlines.Plugin",
+    "dev.inmo.plaguposter.triggers.command.Plugin"
+  ],
+  "posts": {
+    "chats": {
+      "targetChat": -1001234567890,
+      "cacheChat": -1001234567890,
+      "sourceChat": -1001234567890
+    },
+    "autoRemoveMessages": true
+  },
+  "ratingsPolls": {
+    "variants": {
+      "Круть": 2,
+      "Ок": 1,
+      "Не ок": -1,
+      "Совсем не ок": -2,
+      "Посмотреть результаты": 0
+    },
+    "autoAttach": true,
+    "ratingOfferText": "How do you like it?"
+  },
+  "selector": {
+    "items": [
+      {
+        "time": {
+          "from": "23:00",
+          "to": "23:59"
+        },
+        "rating": {
+          "min": -1.0,
+          "max": 2.0,
+          "prefer": "max",
+          "otherwise": {
+            "rating": {
+              "min": 2.0,
+              "prefer": "min",
+              "postAge": 86400
+            }
+          },
+          "postAge": 86400
+        }
+      },
+      {
+        "time": {
+          "from": "00:00",
+          "to": "06:59"
+        },
+        "rating": {
+          "min": -1.0,
+          "max": 2.0,
+          "prefer": "max",
+          "otherwise": {
+            "rating": {
+              "min": 2.0,
+              "prefer": "min",
+              "postAge": 86400
+            }
+          },
+          "postAge": 86400
+        }
+      },
+      {
+        "time": {
+          "from": "07:00",
+          "to": "12:00"
+        },
+        "rating": {
+          "min": 1.0,
+          "prefer": "min",
+          "otherwise": {
+            "rating": {
+              "max": 1.0,
+              "prefer": "max",
+              "postAge": 86400
+            }
+          },
+          "postAge": 86400
+        }
+      },
+      {
+        "time": {
+          "from": "12:00",
+          "to": "16:00"
+        },
+        "rating": {
+          "min": 2.0,
+          "prefer": "min",
+          "otherwise": {
+            "rating": {
+              "max": 2.0,
+              "prefer": "max",
+              "postAge": 86400
+            }
+          },
+          "postAge": 86400
+        }
+      },
+      {
+        "time": {
+          "from": "16:00",
+          "to": "23:00"
+        },
+        "rating": {
+          "prefer": "max",
+          "postAge": 86400
+        }
+      }
+    ]
+  },
+  "timer_trigger": {
+    "krontab": "0 30 */5 * *"
+  },
+  "gc": {
+    "autoclear": {
+      "rating": -1,
+      "autoClearKrontab": "0 0 0 * *",
+      "skipPostAge": 86400
+    },
+    "immediateDrop": -2
+  }
+}

sample/docker-compose.yml

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+version: "3.4"
+
+services:
+  plaguposter_postgres:
+    image: postgres
+    container_name: "plaguposter_postgres"
+    restart: "unless-stopped"
+    environment:
+      POSTGRES_USER: "${PG_USER}"
+      POSTGRES_PASSWORD: "${PG_PASSWORD}"
+      POSTGRES_DB: "${PG_DB}"
+    volumes:
+      - "${DATA_PATH}/db/:/var/lib/postgresql/"
+  plaguposter:
+    image: insanusmokrassar/plaguposter
+    container_name: "plaguposter"
+    restart: "unless-stopped"
+    volumes:
+      - "${DATA_PATH}/config.json:/config.json"
+    links:
+      - "plaguposter_postgres:postgres"
+    depends_on:
+      - "plaguposter_postgres"